FI109224B - Lever tumbler lock - Google Patents

Abstract

A lever tumbler lock 1, comprising a lock housing 2 or the like accommodating a quantity of locking discs 3 provided with locking channels, a bolt 5 and a locking pin 6 or the like, which latter is arranged for force transmission connection with the bolt 4 and for interaction with the locking channels 4 of the locking discs 3. The lever tumbler lock 1 additionally comprises a separate force transmission member 7 for achieving force transmission between the bolt 5 and the locking pin 6 or the like. <IMAGE>

Description

109224

HARDWARE LOCK - TILLHÄLLARLÄS

The invention relates to a drawbar lock according to the preamble of claim 1.

The disadvantageous locking locks subject to the invention are used, for example, in doors as security locks. As security requirements become more stringent, a large number of additional key options are required. In principle, this can be achieved, for example, by increasing the number of baffle plates or the number of staging alternatives, i.e. the combination values, of the combination surface mills. However, the size of both the key and the 10 locks must be kept within reasonable limits and the reduction of the milling step may in turn cause malfunctions and malfunctions.

It should also be as difficult as possible to tune the locks. The deflection channel of the baffle plates used in these locks comprises a branch which traditionally connects the locking legs, which is straight and extends parallel to the displacement movements of the axle.

In this case, when tapping the lock, it is sufficient that the baffle plates are arranged so that the said connecting branches of their baffle channels are located at the locking pin. The bolt can then be pressed into its unlocking position as the locking pin moves directly through the respective branch of the damper channel. To prevent tampering, it is known to provide the locking arms of the malfunctioning channel with various slots in which: · 20 locking pins can engage when searching for the correct position of the malfunction plates. In this case ;; · the sensing of the position of the baffle plates is at least difficult.

One drawback lock is disclosed in EP 1 035 278 A2. In the * 'solution presented herein, the key blade comprises a guide member which, at the final stage of the wand plate selection movement' ··· *, acts on the latch to guide the locking pin 25 to the connecting branch of the latching channel locking arms. In addition, the third leg of the malfunction channel comprises at least one guide means for controlling the locking pin simultaneously with the displacement of the axle and the movement of the damper plate.

2 109224

It is an object of the invention to provide a tamper-evident lock, the tampering of which can be more reliably prevented.

The objects of the invention are mainly achieved in the manner detailed in claim 1 and in other claims. The baffle plate lock 5 according to the invention comprises a lock body or the like having a plurality of baffle plates having a baffle, a bolt and a locking pin or the like arranged in a transmission connection with the caliper and cooperating with the baffle channels of the baffles. The baffle plate lock further comprises a separate transmission means for providing a transmission between the caliper and the locking pin or the like.

The transmission means is movably mounted on the tongue so that its freedom of movement is defined and the locking pin is fitted to the transmission means. Preferably, the transmission means is operatively connected to the axle so that their lateral surfaces face each other and a mechanical control arrangement is provided to control their mutual movement 15. This control arrangement determines the movement limits and / or direction of movement between the axle and said transmission actuator. The mechanical control arrangement comprises at least one pair of pin control grooves or the like arranged to direct the transmission means in a direction deviating from the direction of movement of the axle.

The lock body is provided with barrier means in the vicinity of the caliper and the transmission member J. comprises a hook or similar means arranged in cooperation with the barrier means in movement between the gear member and the caliper so that the locking body is applied to the caliper by its movable force.

The drawbar lock according to the invention comprises on one side of the axle means for converting the rotation of the key to a linear motion of the axle, wherein the hook or similar members of the force transmission actuator are preferably disposed on the opposite side of the axle with said members of the axle.

3, 109224

The invention will now be described, by way of example, with reference to the accompanying drawings, in which: - Figure 1 schematically illustrates a drawbar lock according to the invention in a locked position 5;

In the drawings, reference numeral 1 shows a baffle plate lock comprising 10 lock body 2 or the like having a plurality of baffle plates 3 provided with baffle channels 4. Further, the lock comprises a shaft 5 movably disposed along its longitudinal axis to the lock body 2. The baffle plate lock further comprises a locking pin 6 which is arranged in a transmission relationship with the axle 5 such that the axial force applied to the telescope can be applied via the locking pin 6 to the baffle plates 3. The locking pin 6 is further adapted to cooperate with the baffle plates 4. The baffle plates are mounted on the lock body 2 in a manner known per se by means of elongated guide apertures 3 'movable transversely to the movement direction of the axle against the spring force.

. Fig. 1 shows the basic state of the baffle plate lock 1 according to the invention in the locked position. The lock comprises a separate transmission means 7 for providing: a power transmission connection between the bolt 5 and the locking pin 6. Here the '···' transmission means is referred to as the hook plate. The hook plate 7 is arranged with the axle 5 in a force transmission connection which allows a certain mutual movement between them. The pieces are located so that their side faces are opposite.

* 'In addition, a mechanical arrangement is provided to control their mutual movement; A steering arrangement 8 comprising a pin-guiding groove pair or the like, which defines the movement limits and / or direction of movement between the axle 5 and the hook plate 7. In the embodiment of the figures, two pins 8 'are provided on the rack 5 and two grooves or long holes 8 "respectively on the hook plate 7. The direction of the groove 8" is such that the movement between the bolt 5 and the hook plate 7

The lock body 2 is provided with barrier members 9 in the vicinity of the bar 5, and the hook bar 7, respectively, comprises a hook 10 or similar members cooperating with one another in a tapping situation in the movement between the hook bar 7 and the bar 5. A guide surface 11 of the key 10 is provided at the lower edge of the bar 5 for converting the rotational movement of the key into a linear movement of the bar, and the hook 10 of the hook plate 7 is disposed on the opposite side of the bar. The locking pin 6 is disposed on the hook plate 7, whereby the thrust exerted externally on the bolt 5 causes the hook arrangement 7 to be displaced by the control arrangement 8 so that the hook 10 hits the barrier members. . 15 9 and the movement of the axle is blocked (see Figure 2). Thus, by the combined effect of the hook 10 and the barrier members 9, its moving force applied to the bracket is *. transmitted to the lock body and the force to the interfering plates 3 via the rear locking pin 6 ceases. There are two barrier members 9 here. Thus, the invention; * '! arrangement is available at all necessary lock opening stages 20. Generally, the number of barrier members is preferably one less than the number of movement barrier branches of the baffle plates.

The solution according to the invention can very effectively make it difficult to tamper with the lock, especially the so-called. Hobbs method and its derivatives. Ko.

/ ·. in the method, an inwardly pushing load of the tine is applied to the lock tine, whereby the locking pin is pressed against the edge of the tumbler channel blocking bar. In this case, by lifting the baffle plate through the key hole, the location of the branch in the baffle channel of the baffle plate parallel to the movement of the bolt can be sensed. Repeat this procedure for each baffle plate 5 109224 until the correct opening combination is found. This is also the basis for more advanced versions of the tapping method.

Figure 2 illustrates the situation under the control of a tapping attempt. An essential part of the solution is a hook plate 7 connected to or connected to the bolt 5, which is loaded by a spring 12 against the bolt so that the spring pushes the hook plate 7 away from the end coming out of the lock of the bolt 5. Since the locking pin 6 is mounted on the hook plate 7, the external thrust exerted on the block is transmitted in the first step via the hook plate 7 to the discs 3. When a load pushing the block from e.g. the keyhole is pushed 10, the lock pin 6 is pressed against one or more discs 3. caused by the wrong key in the key hole. Using the right key, the baffle plates 3 would have reached the position of free running of the axle even before the movement of the axle. Further, when using the right key, the hook plate 7 is always stationary with respect to the bolt.

However, in Fig. 2, the latches 5 are loaded other than by means of a suitable wrench · · · · · · · · · · · · · · · · · · · · · · · · · · · · · This causes the locking pin 6 to fall against the baffle plate 3. Thereby, a force opposite to the load of the axle is applied to the hook plate 7 which, by the action of the pins 8 'and the grooves 8 "20, moves the hook plate 7 in the pattern, whereby the hook ·:: of the hook plate 7 rests against the barrier members 9. and through the grooves 8 of the hook plate to and from the hook plate 7, further through the barrier members 9 to the lock body 1 and not to the stop plates 3. This, ··, is illustrated in Figure 3.

Figure 3 also shows a tern or the like 13 for attempting to: touch sensing the discs. However, by the effect of the invention, the positioning of the branch 4 in the direction of movement of the drawbar of the drawbar 3 is prevented by palpation, since the drawbar moves at this stage without loading the locking pin 6. This can be further enhanced by designing i

Claims (7)

A shelf reading (1) comprising a welding housing (2) or the like, wherein is an amount j locking discs (3) provided with locking channels, a rule (5) and a reading pin (6) or the like, arranged for power transmission connection with the rule (5) and in cooperation with the locking channels (4) of the locking discs (3), characterized by, the shelf reader (1) further comprises a separate: *: power transmission means (7) to effect power transmission between the rule (5) and the loading pin (6) or the like. : 25 The shutter load according to claim 1, characterized in that the power transmission means (7) is movably adapted to the rule (5), so that its freedom of movement is determined and that the welding pin (6) is adapted to the power transmission means (7). A tilt reading according to claim 2, characterized in that the power transmission means (7) is adapted to the rule (5) so that their side surfaces are 5 to each other, and to control their reciprocal movement is adapted to a mechanical control arrangement (8) defining movement limits. and / or direction of movement of the movement between the rule (5) and said power transmission means (7). 4. A tilt reading according to claim 3, characterized in that the mechanical control arrangement (8) comprises at least one pin - control channel pair 10 or the like (8 ', 8 ") arranged to control the power transmission means (7) in a direction deviating from the direction of movement of the rule. . The shutter reader according to claim 2, characterized in that the tile housing (2) is arranged in the vicinity of the rule (5) obstacle means (9) and that the power transmission means (7) comprises a hook (10) or similar means arranged with the movement between the power transmitting means (7) and the rule (5) for cooperation with the obstacle means (9), so that, to the rule directed, its direction of movement which can be conveyed by the said means to the reading housing (2). A shutter reader according to claim 5, comprising on the other side of the rule (5) means (11) for changing the rotational movement of the key to the linear movement of the rule; Characterized in that the hook (10) or similar means of the power transmission means (7) is adapted to the opposite side of the rule (5) with respect to said means (11). 7. A readout according to any of the preceding claims, characterized in that the obstacle means (9) are in number one of the branches 25 of the locking channels (4) in the direction of movement of the locking discs (3). t I l S I »