DE2204630A1 - Safety lock with lock cylinder and plate-shaped tumblers - Google Patents

Description

NEIMAN & CO. KG

Schweller Str. 100-108

Security lock with lock cylinder and plate-shaped tumblers.

However, security locks with Schiießsylindern, flat keys and Plattenzuhaltwngen which are means of control ribs odes of the beard of the key grooves zwangsSchlussig! Actuated already known "versions of this kind do not meet the requirements to be imposed on them. In the case of plate tumblers controlled without spring force and / or counter-throwing, the respective suction position and locking cylinder is of undesirable importance because the weight of the plate nzulialtunge η determines the locking position nsiek key withdrawal. Scanning these tumblers © and using the associated key is relatively easy. In addition, the design of the Sehlüseels makes ä © r Schließzylinderauafühnragen in the field Her Stepjsrfaisven or ribs manufacturing technical difficulties w © il either the stability of the key fails too low od © r of the tool costs with changing design of gtaiierlrarven is in accordance with the gewäteleistendeη Söhließvariationen too large.

A closing cylinder version is also known the plate tumblers under spring action

209834/0120

form-fitting by raised control ribs of the Keys are controlled. If the security level of locks with lock cylinders of this type of earlier versions already advantageously stands out, the cost-effectiveness of production is insufficient because of the Structural and manufacturing effort with the same level of security of the lock compared to other, just as safe Locks is too high when the cost of key making itself is sucked into the bill, which is essential appears.

Thus, the task of the present invention results as meaning that the training j A security locks with cylinder! Is proposing flat key and with plate tumblers in de si achieving an accessible Höchstmasees of security in connection with the fulfillment of the conditions of an economic finished narrowing occurs.

The solution to this problem is characterized by Security locks with SehießsyliMeri-i, flat keys and with plattenfSroigen tumblers that are in the locked position engage in engagement spaces of the cylinder housing, and the recesses for the implementation of the tumblers controlling Have flat wrenches} whereby grooves of the flat wrench are provided for positive control of the tumblers are, according to the invention in that in at least one Guide pocket of the cylinder core that holds the plate tight and that in the beard of the

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Key control oken of a tumbler receiving locking grooves preferably on "both wide surfaces of the key excepted which occur in rope areas staggered transversely to the longitudinal direction of the key beard and which occur one below the other preferably by means of at an angle to the end of the hair lengthwise direction running transitions and with the formation of equidistant sand edges. The run advantageously the transitions connecting the key cam sections at 45 ° to the longitudinal direction of the key bit. The control cams protrude under the action of springs standing tumblers alternately into the keyway, so they form flexible locks against the HOBB opening proceedings.

The new locking cam shape enables the key to be manufactured on numerically controlled machines and by the Shaping the grooves, the cost of the production of keys is no greater than for a conventional one Key with notches. Next is the generation of replacement keys on table milling or the like. Relatively easy, because the locking groove with one and the same jPräserausführung can be manufactured. It is an advantage of this design that the in the key feedthrough recess of the Control cams lying on top of tumbler plates protrude into the keyway on both sides when the plates are arranged alternately and thus form flexible barriers against the HOBB opening process. Further advantages result from the fact that the strength of the key tip upstream of the locking grooves, the distance between opposing locking grooves, at its deepest And that the control cam corresponds to the

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Plate tumblers in the passage recess for the Key on the beginning of the locking grooves facing the key tip can be aligned in such a way that regardless of the further course of the locking grooves "when the key is inserted only the plate tumblers can be penetrated by the key bit are, which in their dimensions are proportionate to the position of the key tip to the start of the locking groove. The resulting increase in the degree of security of the lock can differ in this Position can be used to expand the locking differences. A mirror image symmetrical arrangement the locking grooves in the key bit leads to the possibility of introducing the key in any position to operate the Lock cylinder.

Tumbler plates according to the invention are provided on one side in the direction of the locking position with a stop which, after key withdrawal, the VeBsehiebeweg the tumbler plates in the blocked position according to their closing step, comes to rest on the cylinder body and limits the displacement path so that the The position of the plate tumblers in the area of the key channel required for safe key insertion is guaranteed and makes it unnecessary to secure the plate tumblers by caulking in the cylinder core.

The drawing shows an embodiment of the invention.

1 shows a longitudinal section through the lock cylinder with the key inserted,

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Pig. 2 shows a longitudinal section according to FIG. 1 "with removed Key with view of the tumbler plates in the locked position;

Pig. 3 shows a cross section through the lock cylinder along line III - III of Pig. 1,

4 shows a cross section through the lock cylinder Line IV-IV of the Pig. 2,

Pig. 5 the perspective view of tumbler plates in the arrangement position in the cylinder core,

Pig. 6 a partial view of the key,

Pig. 7 shows a cross section through the key bit along line VII - VII of Pig. 6,

Pig. 8 is a partial view of the key in the direction of FIG Arrow VIII and

Pig · 9 is a partial view of the key in the direction of arrow IX of Pig · 6.

Like from Pig. 1, 2, 3 and 4, the lock cylinder shows the cylinder housing 1, in which the cylinder core 2 is rotatably mounted. The cylinder core 2 contains the Key channel 3 and a plurality of guide pockets 4, 5, 6, 7 »8, etc., arranged perpendicular to it, in which

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Groups of two tumbler plates 9, 10, 11, 12, etc. are arranged reciprocally and displaceably. The tumbler plates 9, 10, 11, 12, etc. grip in the blocked position after removing the key in the longitudinal direction of the lock cylinder extending locking grooves H, 15 of the cylinder housing 1 corresponding to the dimensions of the tumbler plates and thereby lock the cylinder core 2 in the cylinder housing in direction of rotation · The tumbler plates 9, / 10, 11, 12 etc. are under the influence of springs 16, 17 etc. and will pressed by the latter into the blocking position. The springs 16, 17, etc., are housed in recesses 18, 19, etc., the side of the guide pockets 4, 5, 6, 7, 8 etc. and the thickness of the tumbler plate are open towards the guide pocket. The tumbler plates 9, 10, 11, 12 etc. protrude into the recesses 18, 19 etc. protruding lugs 20 with the springs supported in the cylinder core 2 at 21 16, 17 etc. in Virk connection. The lugs 20 of the tumbler plates 9, 10, 11, 12, etc. form on the spring facing away Flank · in each case a stop 22 which, after the key has been withdrawn, rests within an area 23 on the cylinder housing 1 and the penetration of tumbler plates 9,10,11,12, etc. into locking grooves 14, 15 is limited · The tumbler plates 9, 10, 11, 12, etc. each have a recess 24 for the bit 25 of the key 29 with control hooks 26, which their shape (Fig. 7) according to the locking grooves 27, 28 of the key 29 are adapted. These locking grooves 27, 28 on both Key bit delimitation surfaces in the same training are provided in mirror-image symmetry opposite one another, occur in this case transversely to the longitudinal direction of the key bit staggered, the closing differences

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Subregions 50, 31 which are correspondingly offset from one another on, the one below the other by having the same cross-section, each at an angle of 45 ° to the longitudinal direction of the key bit Grooves 31 are connected, the band edges of the locking grooves 27, 28 being equidistant · This means that the Closing grooves along their length with an end mill can be manufactured in one operation on a numerically controlled machine The key tip 32 is according to the distance between the locking grooves 9, 10, 11, 12 etc. measured at their deepest point, designed to be flattened and upstream of the locking grooves. The start of the closing groove 33 can, viewed in the longitudinal direction of the Sehltüseelbart, its position towards the tip of the key at various points along the length of the key bit be provided, regardless of the length range 34 of the locking groove for classification the plate tumblers are used. Since the position of the control cam 26 within the recesses 24 of the tumbler plates 9 »10, 11, 12 etc. from the position of the key tip 32 at the beginning 33 eggs Locking groove is dependent, the realizable difference leads to the generation of an additional level of security, because only one key belonging to the lock for Penetration of all! Plate tumblers can lead if it is long enough · In addition, an axially effective Stop the introduction of keys with long beards.

The function of the security lock described is as follows:

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When inserting the key into the key channel the plate tumblers 9, 10, 11, 12 etc. against the action of the springs 16, 17 by the action of the key tip 32 on the surface 35, 36 of the recess 24 is raised until the narrow surface 37, 38 of the key bit adjoining the key tip 25 runs flush with the surface 35, 36 of the recess 24. The beginning 33 of the locking groove is in the key bit in this position congruent with the control cam 26 in the recess 24 of a plate tumbler. When using the port of the When the key is inserted, a control cam 26 comes into the area of a locking groove connected to the tip of the key 34 and brings the associated plate tumbler into the one required for actuating the lock cylinder location. The plate tumblers are inevitably moved out of the locked position and beyond the same. This process is of particular importance in the case of lock cylinder designs that are caused by corrosion or Dust contamination, the mobility of the plate tumblers is in question and the known lock cylinder designs without spring action or with one-sided spring action would no longer be sufficient to guarantee the functional sequence shown.

72 20 d, dGm

20983A / 0120

Claims (7)

EXPECTATIONS Security lock with lock cylinder, flat key and with plate-shaped tumblers that are in the 'locked position engage in engagement spaces of the cylinder housing and the recesses for. Implementation of the tumblers have controlling flat key, with hats in the key bit for positively effective control of the tumblers are provided, thereby indicating that in at least one Guide pocket (4-, 5, 6, 7, 8 etc.) of the cylinder core (2) at least one plate tumbler (9, 10, 11, 12 etc.) and that in the beard (25) of the key (29) control cams (26) of a tumbler receiving locking grooves (27,28), preferably on both broad surfaces of the key, except in the transverse to the longitudinal direction of the key bit staggered partial areas (30, 31) occur and preferably by means of at an angle to the longitudinal direction of the key bit running transitions and are connected to one another with the formation of equidistant marginal edges. 2). Lock cylinder according to Claim 1, characterized in that that the transitions connecting the closing curve subregions (30, 31) run at 45 ° to the longitudinal direction of the key bit. 3). Safety lock according to one of claims 1, 2, characterized in that control cams (26) standing under the action of springs (16, 17) - 2 - 0834/0120 Locking devices (9, 10, 11, 12, etc.) alternately with the formation of flexible barriers against the HOBB opening process protrude into the keyway. 4). Security lock according to one of claims 1-3, characterized in that in side surfaces (39, 40) of the key bit (25) arranged control grooves (27, 28) in mirror image symmetry in relation are arranged to one another, so that the key (29) for actuating the lock cylinder can be inserted in any position is. 5). Security lock according to one of claims 1-3, characterized in that the Strength of a key upstream of the control grooves1-spitfce (32) corresponds to the distance between the opposing control grooves (27, 28), measured at their lowest point and that the control cams (26) of the tumblers (9, 10, 11, 12 etc.) in the passage recess (24) for the key on one of the key tip facing beginning (33) of the locking grooves so aligned are that regardless of the further course of the locking grooves when the key is inserted, only the tumblers are penetrable by key bits, which are proportionate to their dimensions with the position the key tip to the start of the locking groove. - 3 - 209834/0120 6) safety lock according to one of claims 1-5, characterized in that while increasing the visual closure differences the situation of the beginning of the closing groove (33) corresponding to the key tip (32) in the longitudinal direction of the Key bit (25), regardless of the locking groove design required for actuating the lock cylinder, is different. 7) security lock according to one of claims 1-6, characterized in that one with a leather (16, 17) in operative connection Cams (20) of the plate tumblers (9, 10, 11, 12 etc.) opposite to the spring support surface (41) as a stop (22) is formed, which after key withdrawal on the lock cylinder housing (1) at (23) to the plant comes and limits the displacement of the plate tumblers in the blocked position. 72 20 d, dGm
10/97 200834/0120