CZ26951U1 - Lock and key for actuating the lock - Google Patents

Description

The Industrial Property Office does not ascertain in the registration procedure whether the subject of the utility model meets the conditions of eligibility for protection pursuant to Act No. No. 478/1992 Coll.

CZ 26951 Ul

Lock and key to control this lock

Technical field

The invention relates to a lock arrangement with at least one locking cylinder and keys for operating the lock.

BACKGROUND OF THE INVENTION

Known embodiments of the cylinder lock key are typically supported by a projection in the lower or side edge of the key shank in its transition portion facing the key head on the face of the rotatable lock cylinder, thereby defining the position of the closure formed at the lower edge of the key shank and tumbler bores; the locking pins in the insert and in the lock housing body. This arrangement requires relatively precise machining of the insert face which may affect the function of the lock. In other embodiments, the protrusion in the region of the flat key tip rests on a fixed stop that is secured in the recess of the lock cylinder at its inner end, see, for example, US Patents 3298211, US 5176015, US 5507163 and US 6079240, British Patents GB 181429, GB 2361505; GB 2413152 or European patent EP 1154103. These designs do not allow the stop member to be positioned at any point along the length of the lock cylinder and thus to control the lock with a different number of tumblers with a key. . This means that keys with the same trowel depth for tumblers can be operated with locks with a different number of tumblers.

The weakened portion of the key shaft in its end region may also result in inaccurate key guidance 20 in the insert, which, in prolonged use, may render the lock non-functional since the key does not have the desired vertical position. A further disadvantage is the reduced key lifetime, as the locking pins of the lock extend over the separating surface and mechanically abrade the insert, which may be the reason that these embodiments of the key and lock have not found wider application in the market.

Patent CZ 303220 and utility model CZ 24303 disclose lock and key systems for its operation, wherein in the 25 longitudinal axis of the insert there is a variable position of the inner or outer key stop, which allows a higher level of control of key production and increased life of the lock and flat key control.

The aim of this technical solution is to make it difficult to use keys that are not authorized by the lock manufacturer and which in use can damage the lock cylinder. Another goal is to increase the level of security, distribution and combination capabilities of each key.

The essence of the technical solution

The object of this technical solution is the arrangement of the lock and key system as well as the key for operating the lock. The lock has at least one lock cylinder rotatably mounted in its housing, which is provided at its inner end with an outer radial groove with an interlocking member 35 inserted therein for axially securing the position of the cylinder in the housing body, and wherein one of its edges cut-outs for engaging and aligning the tumblers of the lock. In the region between the outer radial groove and the liner face, the cylindrical liner is provided with a further radial groove for the locking member housed in the cylinder body where the lock key cooperates with the locking member, and wherein the lock housing is provided with a lock against the locking member. the depth corresponds to the shape and thickness of the segment of the locking member. The principle of the invention consists in that the locking member is provided with at least one pin, which pin, depending on its position in the lock of the inserted key, is in the functional position of blocking the rotation of the cylinder in the lock housing between the cylindrical insert and the housing body, and slid out of this opening towards the cylindrical insert body 45 in the operative position of releasing the locked partition by actuating the locking member as it is lifted by the leading surface of the front of the key.

CZ 26951 υΐ

The locking member pin may have a circular or angular cross-section that extends from a straight to a rounded portion adapted to be inserted into a radial groove of the cylindrical insert.

The lower end of the locking member pin may be in the operative position by sliding it into the opening of the lock housing over the partition between the cylinder and the housing body, preferably at a distance of 0.74 to 1.44 mm from the partition and its stroke at the front the locking member may be from 1.92 to 3.62 mm.

The front side of the flat shaft of the key may have at least one shaped notch or recess with a stop face on the dorsal edge opposite the edge with the slots for engaging and aligning the tumblers of the lock.

The key is provided with at least one stop on the lock component selected from the group comprising an outer stop face of the cylinder head and / or bushing face, a locking member, a cylinder lock ring, a spacer ring, a control tooth, a clutch, a clutch pin and an extension. The key stop from the axis of one of the lock tumblers is a controlled variable. This means that several variants of the key stop from the axis of one of the lock tumblers can be used.

The subject of the present invention is also a key for operating the aforementioned lock. the tip of the key shank has a contoured angled or rounded lead-in surface for lifting the locking member with the pin when in contact with the key inserted to unlock the separating surface between the cylinder liner and the housing body.

Clarification of drawings

The accompanying drawings show exemplary embodiments of this invention. FIG. 1 shows an embodiment of a flat key for a cylinder with a cylinder lock, wherein the keyhole has slots at one of its edges to engage and align the tumblers of the lock, and its opposite ridge has an upwardly open slot with a substantially perpendicular stop surface The front side of the shaped notch opens obliquely towards the tip of the key shank.

FIG. 2 is an axonometric view of a cylindrical insert with a flat key inserted according to the present invention, wherein the stop surface of the key at the upper edge of its shaft is supported by a locking member formed by a pin that passes into a rounded upper part; loosely mounted in the insert hole and the lock case with the possibility of sliding out into the cylinder body in the functional position of releasing the blocking surface blocked by it.

Fig. 3 is a detail of the front part of the key with the stop surface at the upper edge of its shank supported by the locking member. FIG. 4 shows the locking member in the cylindrical insert in the operative position, blocking the partition between the cylindrical insert and the lock housing. In Fig. 5, the locking member is in a position that does not block the partition and the cylinder can rotate in the lock housing. Fig. 6 is a view of the cylinder lock secured against axial ejection from the lock housing; Fig. 7 is a rear view of the lock cylinder lock. FIG. 8 is a cross-sectional view of the lock with the locking member with the locking member in the operative position blocking the partition between the cylinder and the lock housing; FIG. 9 is a cross-section of FIG. 8 with the locking member extended without blocking the partition. FIG. 10 shows a cylindrical insert with radial grooves intended to receive a snap ring and a locking member. FIG. 11 illustrates, in cross-section and rear view, the stroke of the locking member, which is shown in both the upper and lower positions. Figures 12 and 13 show two different embodiments of the lock according to the present invention, wherein Figure 12 shows a lock with a short cylinder liner and Figure 13 with an extended cylinder liner.

FIG. 14 shows examples of different shapes of a locking member which in this embodiment of the invention simultaneously serves as a stop member.

Fig. 15 shows the outer face of a lock cylinder with a partially inserted key according to the present invention. A pin is pressed into the face of the insert with a certain play, which on impact

U1 of an unauthorized key with a conventional key stop by the so-called dynamic bumping method locks the first locking pin / tumbler lock and thus disables the lock function.

FIG. 16 shows examples of several embodiments of a key for operating the aforementioned lock; the tip of the key shank has a contoured angled or rounded lead-in surface 5 for lifting the locking member with the pin in contact with the key inserted to unlock the partition between the cylinder liner and the housing body.

Examples of technical solutions

The lock according to this invention has two coaxial locking cylinders 1 with a key channel for a flat key 7, each of which is rotatably mounted in its housing 2. Both of these housings 2 are connected to each other by a bridge (not shown). In addition, the cylinders 1 are further held together by locking rings 8 (Figs. 6 and 7) which prevent their axial ejection from the housing 2 and are fitted with a clutch 21 which is slidably but non-rotatably mounted relative to the lock cylinders 1. in the axis of rotation of the control tooth body 19 situated in the gap between the two inserts 1 (Figs. 12 and 13). In the key channel of each insert 1 the upper ends of the radial lock shafts 15 are arranged in a row, in which the tumblers 26 are slidably mounted, the upper ends of which cooperate with the coding formed on the lower narrow edge of the flat key 7 and the upper faces of the locking pins 27, which are supported spring-loaded in the bores of the housing 2, coaxial with the corresponding shafts in the insert 1 in the functional locked position of the insert 1 (Figs. 12 and 13).

Each cylindrical insert 1 is provided with an outer radial groove 15 (Fig. 10) on its end inner side, into which a locking ring 8 (Figs. 6 and 7) is inserted and secured against sliding, to axially secure the position of the cylindrical insert 1 in the body. lock housing 2. The protrusions 6 at both ends of the locking ring 8 engage (after insertion into the outer radial groove 15) in the transverse groove 5 in the inner end region of the cylindrical insert 1 (FIGS. 6 and 7).

The cylindrical insert 1 is further provided with a radial groove 9 with a rounded or flat bottom for receiving a blocking member 3, which is formed, for example, by a steel rounded or eye-closed piece which passes from below into a pin 14 (see FIG. 3). This pin 14, depending on the position of the key inserted in the lock, is in the functional position of blocking the rotation of the cylinder 1 in the body of the lock housing 2 loosely seated in the opening 18 of the lock housing 2 (Figs. 8, 9, 11). over the separating surface between the cylinder 1 and the housing body 2, and slid out of this opening 18 towards the cylinder body 1 in the operative position of releasing the locked separating surface by moving the locking member 3 when it is lifted by the leading surface 16 of the front key 7. 11, the locking member 3 is shown in both its operative positions when the separating surface 35 is blocked and released. The pin 14 of the locking member 3 may have a circular or angular cross-section that extends from a straight to an upper rounded portion adapted to be inserted into a radial groove 9 of the cylinder liner 1 (Figs. 10 and 14). The lower end of the pin 14 of the locking member 3 is in the operative position by inserting it into the opening 18 of the lock housing 2 over the separating surface between the cylinder 1 and the housing 2 at a distance preferably from 0.74 to 1.44 mm. the contact of the front side of the key 7 with the locking member 3 is from 1.92 to 3.62 mm.

The shaft 4 of the key 7 is provided with a shaped notch or recess with a stop surface 11 on the front side of its upper dorsal edge, opposite the edge with the notches for engaging and aligning the lock tumblers 26 (FIG. 1). If the key 7 is not inserted into the lock, then the locking member 3 engages with its pin 14 into the opening 18 in the lock housing 2 (e.g. FIGS. 4 and 8) and blocks the cylinder 1 against 45 rotation (pin 14 of the locking member 3 opening 18 in the lock housing 2). After insertion of the key 7, the locking member 3 is raised by its inclined or rounded leading surface 16 at the front of the key 7, thereby exposing the separating surface between the cylinder 1 and the lock housing 2 and turning the cylinder 1.

When the key 7 is inserted into the lock cylinder 1, its inclined or rounded leading surface 16 on the tip slides over the lower surface of the upper part of the locking member 3, lifts it and then pushes it into the recesses 17 in the housing 2 (Figs. 5 and 9). When the key shank 4 of the key 7 moves into the position in which the notch in the key shank 7 is below the ring of the upper part of the locking member 3, the ring or the rounded upper part of the locking member 3 fits into this notch. a stop surface 11 in the upper edge of the key 7 abuts against it (in this particular example, the locking member 3 also serves as a stop member). When the key 7 is pulled out of the lock cylinder 1, the notch obliquely opening towards the tip of the key shank (FIG. 1) acts to push the ring of the locking member 3 into the recess in the sleeve 2 and subsequently the key 7 slides over the lower face of the locking member 3 keys from the insert. FIG. 16 shows examples of different shapes of leading surfaces 16 on the front parts of keys 7.

The key 7 is provided with at least one stop on the lock part selected from the group comprising the outer stop face of the face 12 of the cylinder head 24 and / or the housing 2, the locking member 3, the locking ring 8 of the cylinder 1, the spacer ring 20, the control tooth 19 the clutch pin 23, the clutch pad 22 (FIG. 12) and the extension piece 25. The distance of this stop from the axis of one of the lock tumblers 26 is a controlled variable. This means that several variant distances of the key stop 7 from the axis of one of the tumblers 26 can be used.

FIG. 15 shows the outer face 12 of the lock cylinder 1 with the key 7 partially inserted according to the present invention. A pin 13 is pressed into the face 12 of the insert 1 with some play, which, upon impact of an unauthorized key with a conventional key stop, by a so-called dynamic bumping method, blocks the first lock pin / tumbler and thus disables the lock function. This increases the mechanical resistance of the lock against its misuse, i.e., against its drilling and against the use of an unauthorized key with a conventionally shaped stop as a bumping applicator.

Claims (6)

PROTECTION REQUIREMENTS A lock and key, the lock having at least one locking cylinder (1) rotatably mounted in its housing (2), which is provided at its inner end with an outer radial groove (15) with an interlocking member for axially securing the position of the cylinder (1) in the lock body (2) of the lock, wherein the shank (4) of the flat key (7) for operating the lock has cut-outs at one edge for engaging and aligning the lock tumblers in the region between the outer radial groove (15) and face ( 12) the cylinder is a cylindrical cylinder (1) provided with another radial groove (9) for a locking member (3) housed in the cylinder body (1), wherein a lock key (7) cooperates with the locking member (3) and the housing (2) the lock is provided with a recess (17) opposite the locking member (3), whose shape and depth correspond to the shape and thickness of the locking member (3), characterized in that the locking member (3) is provided with at least one pin (14), wherein the pin (14) is, depending on the position of the key inserted (7), in the locked position of rotation of the cylinder (1) in the lock body (2) of the lock housing loosely in the opening (18) of the housing ( 2) a lock over the separating surface between the cylinder (1) and the housing body (2), and slid out of this opening (18) towards the cylindrical insert body (1) in the functional position of releasing the blocked separating surface by moving the locking member (3) lifting it by the front face of the key (7). Lock and key according to claim 1, characterized in that the pin (14) of the locking member (3) has a circular or angular cross-section that extends from a straight to a rounded part adapted to be inserted into a radial groove (9) of the cylindrical insert (1). ). Lock and key according to claim 1 or 2, characterized in that the lower end of the pin (14) of the locking member (3) is in the operative position of its insertion into the opening (18) of the lock housing (2) over the separating surface between the cylinder. 1) and the housing body (2) at a distance of 0.74 to 1.44 mm from the partition and its stroke when the front side of the key (7) and the locking member (3) is from 1.92 to 3.62 mm. Lock and key according to claim 1, characterized in that the front side of the flat shaft of the key (7) has at least one shaped notch or a recess with a stop surface on the dorsal edge opposite the edge with the notches for engaging and aligning the tumbler locks. Lock and key according to one of Claims 1 to 4, characterized in that the key (7) is 5 is provided with at least one stop for a lock component selected from the group comprising an outer stop surface of the face (12) of the head (24) of the insert (1) and / or the housing (2), the locking member (3), the locking ring (8) 1), a spacer ring (20), a control tooth (19), a clutch (21), a clutch pin (23), a clutch washer (22) and an extension piece (25), the distance of this key stop (7) from the axis One of the lock tumblers (26) is a controlled variable. ίο Lock control key according to one of Claims 1 to 5, characterized in that the front part or the front part thereof, respectively. the tip of its shaft (4) has a contoured angled or rounded leading surface (16) for lifting the locking member (3) with the pin (14) when in contact with the inserted key (7) to unlock the partition between the cylinder (1) and the body bushings (2).