ES2288186T3 - CYLINDER LOCK WITH CYLINDER HOUSING AND FLAT WRENCH FOR A CYLINDER LOCK. - Google Patents

Abstract

Cylinder lock and flat key, in which the cylinder lock has a cylinder housing (1) and a rotating cylinder core (2) therein, the cylinder core (2) comprising a key channel (4) for the flat key and scanning elements (25) for control surfaces (24) of the key, as well as locking elements (17) and core pins (9) that lock against rotation or release the core (2) of the cylinder, and being arranged in the core (2) of the cylinder, in a plane transverse to the median longitudinal plane (7) of the cylinder lock, a movable retaining bracket (26) that overlaps the channel (4) of the key in a narrow side with an interlocking leg (27), the interlocking leg (27) facing a key release recess (29) when the flat key is fully inserted, characterized in that the interlocking leg (27) can be shifted between a locked position and a release position n by the key control surfaces (5) and by a spring force (35) and, when the key is not fully inserted, it is held by means of a locking flank (30) of the key in the position of locking within a locking recess (28) of the cylinder housing, and because the retaining bracket (26) is arranged in a plane whose distance (Z) to the inner end of the cylinder lock is variable, the plane being arranged in front of the first pin (9) of the core when considered from the inner end of the cylinder lock.

Description

Cylinder lock with cylinder housing and flat key for a cylinder lock.

The invention relates to a lock of cylinder and a flat key, presenting the cylinder lock a cylinder housing and a rotating cylinder core therein, the cylinder core comprising a key channel for the key flat and scanning elements for control surfaces of the key, as well as locking elements and core spikes that block against rotation or release the cylinder core, and being arranged in the cylinder core, in a plane transverse to the middle longitudinal plane of the cylinder lock, a stirrup of movable retention that overlaps the key channel in a narrow side with an interlocking leg, the leg being interlocking arranged facing a recess release of the key when the flat key is fully inserted.

In cylinder locks, the key introduced it must be removable only in the so-called point position dead. The key must be prevented from being removed from any other rotated position, particularly in the 180º position of the core of cylinder. The constructive measures known to date do not They act in all cases.

However, when the cylinder core is is in the neutral position, the key must be able be extracted even when, during the turn, tensile force is exerted on the key. This happens, for example, when with the key turned it pulls on the door and then keeping the movement, you try to remove the key. In locks you can happen that, due to the traction force during the turn, they get stuck the locking elements inside the lock, so that they do not reach the release position or only do when the key is released for a short time and removed to continuation. Frequently, this is considered by the consumer as a defect of the construction of the lock.

EP 1 048 804 A1 shows a system of closure with stop elements both on the cylinder side of lock as well as on the side of the key, which define the maximum key insertion depth in the channel key.

EP 712 980 A1 shows a lock of cylinder in which in the cylinder core a locking bracket that bridges the key channel and that can move in a recess of the cylinder core in the direction of the cylinder housing

The present invention intends to solve the problem that the key can only be removed in the exactly defined neutral position and, in the rotated position, the locking elements arranged in the lock are discharged from traction even when a tensile load acts on
key.

The problem is solved according to the invention. because the interlocking leg can be displaced by surfaces  of control of the key and by elastic force between a position of lock and a release position and, when the key is not completely introduced, it is retained in a locked position in a interlocking recess of the cylinder housing by a flank of key lock, and because the retention bracket is arranged  in a plane whose distance to the inner end of the lock of cylinder is variable, the plane being in front of the first pin of the core, seen from the inner end of the lock of the cylinder.

The flat key for the cylinder lock mentioned above is characterized because the position of the release recess, seen from the tip of the key, is variable and is in front of the first key notch.

Other advantageous features may be appreciated from the claims, description and drawings.

The following explains in more detail the invention by means of an exemplary embodiment. The features according to the invention can be provided in any lock construction, so that they do not exist in this regard restrictions of any kind. The advantage of downloading Traction of the locking elements in the lock is applied to All lock constructions of this type.

Figure 1 shows the cross section a through a cylinder lock of a type of construction determined to be provided by way of example only;

Figure 2 is schematically a section longitudinally through a part of the cylinder core with the key inserted in neutral position;

Figure 3 shows a rotated position of the cylinder core;

Figure 4 is a section according to the line IV-IV of Figure 2;

Figure 5 is the plan view of the core of the cylinder with the cylinder housing cut out; have been omitted here non-substantial parts of the lock;

Figure 6 shows the plan view of a variant; Y

Figure 7 shows the plan view of a Key loin in a variant.

According to figure 1, the cylinder core 2 is rotatably arranged in the cylinder housing 1. The turn it is carried out along the cylindrical plane of rotation 3. On channel 4 of key, the key 5 sits in the form of a flat key whose pallet 6 presents the known key notches. In the plane longitudinal longitudinal 7 of the lock are both channel 4 of key with the key 5, as well as the drill 8 of the nucleus. In said hole 8 the core pin 9, which is directed towards its position by the key notches of the pallet 6 of the key.

A guiding channel 10 is arranged parallel to the drill 8 of the core pin in the core 2 of the cylinder and crosses the core of the cylinder. On guidance channel 10 is arranged a guiding body 11 that sits sideways in the core pin 9. The guiding body 11 presents on its flank 12 a release slot 13 away from the key channel. In addition, at the upper end of the guide body 11 sits a housing tab 14 attacking on a compression spring fifteen.

A movable locking element 17 is located in a recess 16 practiced next to the guide channel 10 and is prestressed by the spring 18 in the direction of a recess of interlocking 19 of the cylinder housing. In position no rotated of the cylinder core shown in figure 1, the interlocking appendix 20 of the blocking element 17 is hooked in the interlock recess 19.

The blocking element 17 has at its end inside, facing each guide body 11, a spike of exploration 21 which is constructed with dimensions such that can be inserted into the release slot 13.

The operation of the cylinder lock is the next:

When the key 5 is inserted, the pin is pressed 9 from the nucleus down to the associated position, against the pressure of the spring 15, by means of the pin 6 of the key. Be also moves the guide body 11, the groove of release 13 in the position shown if the key is used correct, so that this slot is arranged facing the appendix of locking 20 of the blocking element 17. Therefore, when turning the cylinder core, the locking element can be pressed with its interlocking appendix 20 out of the recess of interlocking 19, introducing the scanning pin 21 in the release slot 13. Therefore, the cylinder core can spin freely.

In case of multiple arrangement of pins 9 of cylinder and guiding bodies 11, all of them must occupy the mentioned position so that the locking body 17 can pass to The position of release.

When a false key is used, pin 9 of the core and the guiding body 11 joined with it occupy a different position, so that the scanning pin 21 remains on the flank 12 of the guiding body, whereby the lock is blocked up.

In the plane of rotation of the guide body 11, the cylinder housing 1 has a respective annular groove 22 which It is open towards the core 2 of the cylinder. Slot width annular 22 corresponds to the width of the guiding body or is greater. The corresponding slots 22 are released ends of the guide body 11 and the pin 9 of the core, with which, on the one hand, increases the path and, on the other hand, both components can be lengthened, so that guidance in the guiding channel and in hole 8 of the core pin. Further, the upper end of the guide body 11 engages in the groove cancel 22 when no key is inserted, so provides protection against extraction for the core. By Therefore, the cylinder core cannot be forced with the method known extraction. For the characteristics of the lock mentioned, the key 5 can correspond to any flat key conventional conventional, such as is usual for spikes split borja. In the present embodiment it presents longitudinal profiled grooves 23 and lateral profiled recesses 24 that can be explored in a known way through additional scanning elements 25 and offering other possibilities of variation

In figure 1, the cylinder housing presents the conventional carcass shape with the soul 32. However, as can be seen, there are no lock elements in this soul. Therefore, this soul 32 can be suppressed, as it is necessary for round cylinders, or this can also be used space for additional locking and locking elements. The arrangement of the annular grooves 22 is solely by way of example and these can also be omitted.

Figure 2 shows a broken section according to the median longitudinal plane 7 through a segment of the inner end (coupling side) of the cylinder core and of the cylinder housing. Key 5 is fully inserted, so that all the spikes of the core (not shown) that are associated with the individual notches 36 of the key are arranged in such a way that the core 2 of the cylinder can be made rotate with respect to the cylinder housing 1. A stirrup of retention 26 is arranged in a plane transverse to the plane longitudinal length of the cylinder lock and overlaps the key channel 4 on its narrow side with an interlocking leg 27.

As can be seen in particular from Figure 4, the upper end of the retaining bracket 26 is placed with its interlocking leg 27 in a recess of interlock 28 of cylinder housing 1. The key 5 presents a release recess 29 facing the interlocking leg 27. Due to this release recess 29, the cylinder core can spin freely, since, when turning the leg of interlock 27 is pressed out of the recess of interlock 28 and is projected freely down into the release recess 29. However, this possibility of movement of the holding bracket is given only when the key is inserted completely. When the key is not fully inserted, the locking flank 30 of the key is arranged under the leg of interlocking 27, so that interlocking leg 27 cannot scroll down and therefore you can't turn the cylinder core

The dimensional particularities are approximately such that the total depth of the recess of release 29 (Y) is equal to the total height of the leg of interlock 27. The depth X of the interlock recess 28 corresponds approximately to the depth of the recess of release 29 facing the blocking flank 30 towards the tip of the key.

As can be seen from Figure 2, the position of the blocking flank 30 with respect to the spine 31 of the key forms a countersink. This countersink facilitates sliding of the tip of the key until it is placed under the leg of interlocking 27. Countersinking also provides a additional security feature of the key, since the conventional flat countersunk counters of this class cannot completely enter the key channel.

The effect of the device occurs because the locking flank 30 fits under the locking leg 27 shortly before the complete introduction of the key in the channel key and prevents the cylinder core from spinning before weather. Therefore, the lateral load of the core spikes that are consequently discharged for each rotating movement, since turning is possible only when the key is fully inserted.

In the rotated position according to figure 3 with the key fully inserted, interlocking leg 27 holds the key in position, so that it cannot backing out.

As can be deduced from Figure 4, the stirrup of retention 26 is constituted by a guide leg 33 which is placed in a housing bore 34 under spring pressure 35

The outer surface 39 of the leg of interlock 27 that applies to interlock recess 28, is performs so wide that interlocking leg 27 cannot interlock in any of the other interlock recesses 19 to avoid impediments during the rotation of the cylinder core.

As can also be seen from the Figure 2, the position of the retaining bracket 26 is preferably in front of the first notch 36 of the key, considered from the tip of the key.

However, the distance Z is in principle variable, so that the holding bracket can also be furthest from the tip of the key.

The distance Z to the tip of the key can vary, thereby raising the number of variations, which means an additional advantage of the invention.

In Figures 2 to 5, the stirrup of interlock 27 in the lock and release recess 29 in the loin 38 of the key are transversely formed such that run perpendicular to the middle longitudinal axis 7. However, the arrangement can also be advantageously oblique, such as can be seen in figures 6 and 7.

Figure 5 shows the stirrup arrangement of retention 26 facing the cylinder core from above. The core spindle holes 8 are shown schematically without the core spikes found in them. The space of necessary movement for interlocking leg 27 in the core of the cylinder is guaranteed by means of the slit 37, such as It can also be seen from Figure 4.

The layout of the retaining bracket and the Key settings are largely independent of the remaining construction of the lock.

According to figure 6, the cylinder lock can be varied by causing the footboard interlocking leg 27 of retention 26 is oblique to the median longitudinal plane 7 of the lock. As a consequence of this, the groove 37 of the core of the cylinder is also arranged obliquely. The angle with the vertical is drawn something increased and will be placed in the practice in approximately 30º. Therefore, on the back of key 38 according to figure 7 is also arranged obliquely the release recess 29, which serves to raise the number of Variations and security of subsequent locking.

Alternatively, in the lock the arrangement vertical of the interlocking leg 27 according to figure 2 can also be combined with the oblique arrangement of the recess of release 29 on the back of the key, for what is available in the interlocking leg 27 an oblique nerve that explores the recess of oblique release

Claims (9)

1. Cylinder lock and flat key, in which the cylinder lock has a cylinder housing (1) and a rotating cylinder core (2) therein, the cylinder core (2) comprising a channel (4) of key for the flat key and scanning elements (25) for control surfaces (24) of the key, as well as locking elements (17) and core pins (9) that lock against rotation or release the core (2) of the cylinder, and being arranged in the core (2) of the cylinder, in a plane transverse to the median longitudinal plane (7) of the cylinder lock, a movable retaining bracket (26) that overlaps the channel (4) of the key on a narrow side with an interlocking leg (27), the interlocking leg (27) facing a release recess (29) of the key when the flat key is fully inserted, characterized in that the interlocking leg (27) can be shifted between a locked position and a release position tion by the key control surfaces (5) and by a spring force (35) and, when the key is not fully inserted, it is maintained by means of a locking flank (30) of the key in the position of locking within a locking recess (28) of the cylinder housing, and because the retaining bracket (26) is arranged in a plane whose distance (Z) to the inner end of the cylinder lock is variable, the plane being arranged in front of the first pin (9) of the core when considered from the inner end of the cylinder lock. 2. Cylinder lock and flat key according to claim 1, characterized in that the retaining bracket (26) has a guide leg (33) movably arranged in a housing bore (34) of the cylinder core and, protruding from it laterally, the interlocking leg (27). 3. Cylinder lock and flat key according to claims 1 or 2, characterized in that a groove (37) is arranged in the core (2) of the cylinder to facilitate the guidance and movement of the retaining bracket (26). 4. Cylinder lock and flat key according to one of claims 1 to 3, characterized in that the interlocking leg (27) is arranged at an angle with the vertical to the middle longitudinal plane (7). 5. Cylinder lock and flat key according to claim 4, characterized in that the angle is equal to approximately 30 °. 6. Cylinder lock and flat key according to one of claims 1 to 3, characterized in that the interlocking leg (27) rises perpendicularly to the median longitudinal plane and has an oblique rib to it that fits into an oblique release recess (29 ) of the key. 7. Flat key for a cylinder lock according to one of claims 1 to 6, wherein the key has key notches (36) and other variation elements, such as longitudinal profiled grooves and lateral profiled recesses, presenting the key on the spine (38) a release recess (29) and, following this, a locking flank (30) oriented towards the tip of the key, characterized in that the position of the release recess (29) is variable and is in front of the first notch (36) of the key, considered from the tip of the key. 8. Flat wrench for a cylinder lock according to claim 7, characterized in that the depth (Y) of the release recess (29) from the back of the key corresponds to the height of the interlocking leg (27) and the height ( X) of the release recess (29) from the blocking flank (30) is smaller than (Y). 9. Flat key for a cylinder lock according to one of claims 7 or 8, characterized in that the release recess (29) is arranged obliquely on the spine (38) of the key.