DE2953451C2 - Permanent magnet key operated lock - Google Patents

Description

60

The invention relates to a permanent magnet key-operated lock according to the preamble of the claim 1.

Such a lock is known from DE-OS 23 50 897, with neither the functional reliability nor a Protection against unauthorized opening in view of today's high demands on such locks is guaranteed. In this construction, it can disadvantageously result from vertical immersion of the locking part come to locking. The known construction is also relatively complicated and sensitive to damage and the ingress of foreign bodies.

The object of the invention is based on the object of providing a permanent magnet key To create a lock of the presupposed type, whose lock equipment parts are functional against unauthorized persons Scanning and penetration of foreign objects are arranged in the lock housing, with pressure loads on the bearings of the permanent magnet twist locks in the event of unauthorized movement of the sliding bolt into the Open position can be largely prevented.

This object is achieved by the features of the characterizing part of claim 1.

In the construction according to the invention are in the case of unauthorized displacement of the sliding bolt in the Open position Pressure loads on the bearings of the permanent magnet rotary tumbler largely prevented, which in particular increases the functional reliability. The construction according to the invention is simple and insensitive to damage and the penetration of foreign bodies. It is also The greatest possible protection against unauthorized opening is guaranteed.

The subclaims relate to advantageous developments of the subject matter of claim 1.

An exemplary embodiment is shown in the drawing. It shows

F i g. 1 on an enlarged scale in section XV-XV a lock that can be operated by a permanent magnet in FIG Fig. 2;

F i g. 2 shows the plan view of the section according to FIG. 1.

A sliding bolt 2 is slidably disposed in a housing 22. In recesses to both. On the sides of the key channels 15, 16 there are in turn displaceable locking plates 1, the webs 3 of which interact with the permanent magnet rotary tumblers 4 . The locking plates 1 are biased from the left by a spring 29, whereby the locking plate is always in its right end position in the rest position of the sliding bolt 2, ie in the closed or open state.

The locking plate 1 carries a locking bolt 26 transversely to its displacement direction, which in the direction of his The longitudinal axis is displaceable. The locking pin 26 is conical or frustoconical at both ends formed, whereby ramp surfaces are formed. With the bolt facing one end 33 protrudes Locking bolt 26 into a conical recess 28 of the sliding bolt 2. With the other end 34 of the Locking bolt 26 protrudes this in a certain position of the sliding bolt 2 in a longitudinal recess 27 of the Housing 22 in the longitudinal recess 27 protrudes approximately at an angle of 45 ° 25 a locking strip is under the pressure of a spring 6.

The mode of action is as follows: In Fi g. I is that Lock shown in its left closed position. Is magnetized with the correct matching Magnetic keys (bank or customer keys 35, 36) the sliding bolt 2 is moved to the right, so it hits End 34 of the locking bolt 26 against the outer surface 31 of the locking strip 25. When the sliding bolt 2 continues to is shifted to the right, there is a relative displacement between the locking plate 1 and the Slide bolt 2, the spring 29 compressed

will. At the same time, a force is applied to the locking bolt 26 through the outer surface 31 of the locking strip 25 Direction of the conical recess 28 and the locking pin is out of the longitudinal recess 27 in the conical recess 28 of the push bolt 2 is pressed into it. The depth 32 of the recess 28 is like this dimensioned that the end 34 of the locking bolt 26 after the relative displacement of the locking plate 1 has taken place completely immersed in the locking plate 1 on the left. During the relative displacement, the webs 3 dip into the ι ο Immersion recesses 17 of the permanent magnet rotary tumblers 4. The locking pin 26 can now the locking bar 25 is moved past and the sliding bolt 2 is brought into the right open position. the Locking plate 1 returns to the right end position.

If an improper attempt is made to move the sliding bolt 2 from the left closed position into the right open position without or without a correctly coded magnetic key, this is not possible. In this case, the locking pin 26 remains hanging on the Sperrloiste 23 and can not be pushed down into the conical recess 28, according as the rotated permanent magnet Drehzuha ¹ -fungen 4, the ridges 3 on the peripheral surfaces of the permanent magnet Drehzuhaltungen trigger and the lock plate 1 cannot perform a relative shift.

If the sliding bolt 2 is in its right open position, the sliding bolt can also be used without w inserted magnetic key to the left in the closed position be pushed. The locking pin 26 strikes the end face 30 of the locking strip 25 and pushes this against the force of the spring 6 upwards. If the sliding bolt is in the left closed position, it arrives the locking strip 25 back into the position shown in FIG. 1 position shown and the sliding bolt can only be used with the correct magnetic key to be moved to the right.

In the embodiment described, the locking mechanism of the lock is shown symmetrically, d. H. that the locking structural parts are arranged on both sides of the key channels. In In certain cases it can be tearing away, the locking structural parts only on one side ■ the key channels to be provided. Furthermore, is also the The number of locking pins 26 and the number of permanent magnet rotary tumblers 4 can be varied.

By immersing the webs 3 in the immersion recesses 17 of the permanent magnet rotary tumblers 4 in the direction of displacement of the sliding bolt is advantageously pressure on the tip bearing of the Permanent magnet rotary tumblers 4 avoided, as there may be pressure support on the surrounding area the permanent magnet rotary tumbler takes place against the sliding bolt wall of the recess. The permanent magnet rotary tumblers 4 are also covered dust-tight by the locking plates 1, since these by the Springs 6 are always pressed against the sliding bolt 2. There is only one at right angles to the direction of movement Movement, namely that of the locking pin 26 instead.

Finally, the sliding lock according to the invention is easy and cheaper to manufacture, since all parts z. B. can be made from zamag.

For this purpose 2 sheets of drawings

Claims (4)

Patent claims: 1. Permanent magnet key actuated lock with one immersion recess each for a locking part having Pcrmanentmagnet-rotary tumblers mounted in a sliding bolt, whereby when the correct magnetic key is inserted, the locking part can immerse into the immersion recess by shifting the sliding bolt and with a locking part in and out of engagement with the locking part can be brought, characterized in that the locking part is designed as a locking plate (1) which can be moved in the direction of displacement of the sliding bolt (2), the webs (3) of which into the immersion recesses (17) of the permanent magnet rotary tumblers (4) when the sliding bolt (2) is opened ) can immerse, and that the locking plate (1) has at least one locking bolt (26) which is guided on one side in a longitudinal recess (27) of the housing (22) and on the one hand with a protruding into the longitudinal recess (27), under the Force of a spring (6) standing locking strip (23) and on the other hand on the other Ren side interacts with a recess (2S) of the sliding bolt (2) with inclined inlet and outlet surfaces for the locking bolt (2 <S) . 2. Permanent magnet key operated lock according to claim 1, characterized in that the Locking plate (1) in the associated recess (38) of the sliding bolt (2) by a spring (29) after a Side is biased. 3. Permanentmagnetschlüsscl actuatable lock according to claim 1 or 2, characterized in that the locking strip (25) is arranged at an angle to the locking plate (1) which is smaller than 90 °, r> preferably 45 °, through you in the longitudinal recess ( 27) protruding surfaces (front or outer surface 39, 31) run-on surfaces for the locking bolts (26) are formed. 4. Permanent magnet key operated lock after a. of claims 1 to 3, characterized in that the conical recess <28) in the sliding bolt (2) has such a depth (32) and arrangement that the locking bolt (26) of the locking plate (1) within the sliding bolt (2) by <<, Running up with its riegelzugcwandten end (33) on the conical surfaces of the recess (28) with the end (34) is pushed into the longitudinal recess (27) of the housing (22) and that when the sliding bolt (2) is moved and the End (34) of the locking bolt (26) on the outer surface (31) of the locking strip (25) and the subsequent relative displacement of the locking plate (1) against the force of the spring (29) of the locking bolt (26) with its end facing the bolt (33) in the conical recess (28) is immersed and the end (34) comes out of engagement with the locking strip (25).