EP0649956A2 - Serrure cylindrique - Google Patents
Serrure cylindrique Download PDFInfo
- Publication number
- EP0649956A2 EP0649956A2 EP94810585A EP94810585A EP0649956A2 EP 0649956 A2 EP0649956 A2 EP 0649956A2 EP 94810585 A EP94810585 A EP 94810585A EP 94810585 A EP94810585 A EP 94810585A EP 0649956 A2 EP0649956 A2 EP 0649956A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- component
- driver
- tumbler
- cylinder lock
- tumblers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B27/00—Cylinder locks or other locks with tumbler pins or balls that are set by pushing the key in
- E05B27/0003—Details
- E05B27/0017—Tumblers or pins
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
- E05B15/16—Use of special materials for parts of locks
- E05B15/1614—Use of special materials for parts of locks of hard materials, to prevent drilling
Definitions
- the invention relates to a cylinder lock with a stator and a rotor rotatable in this stator with a key channel, wherein guides for tumblers with a locking pin part are arranged in the guides approximately at right angles to the longitudinal axis of the key channel and approximately parallel to the broad sides of the key channel, a plurality of tumblers in these guides are movably mounted and each tumbler has a driver which protrudes into the key channel and interacts with guideways in the broad sides of a key.
- Such a cylinder lock with a reversible flat key is known from Swiss Patent No. 407 799.
- a rotatable rotor with a key channel for guiding the reversible flat key is arranged in a stator.
- Guides are incorporated into the rotor parallel to the broad sides of the key channel and approximately at right angles to the longitudinal axis of the rotor, which hold tumblers. These tumblers are positioned with the key and are dimensioned such that they are positioned so that the rotor can be rotated in the stator when the key is correctly coded and inserted into the key channel.
- the tumblers consist of a locking pin part and a guide part as well as a driver and are made of profiled non-ferrous metal wire.
- the driver is arranged at right angles to the locking pin or guide part and protrudes into the key channel. The dimensions of the driver are matched to the grooves on the key, and the drivers engage in the grooves. As a result, the tumblers are moved and positioned when the key is inserted in accordance with the contours or codes of these grooves.
- the tumblers are worked out from corresponding, rod-shaped profile sections.
- the driver is arranged in the center of the guide part so that machining can be carried out by step milling cutters and a round driver is created.
- the round driver is cut out of the full material by milling.
- the processing and manufacturing method generates large amounts of material waste and, since these are expensive materials, also correspondingly high waste costs.
- the upper and lower end surfaces created on the rod-shaped guide parts by machining form stop surfaces for determining the upper and lower end positions of the tumblers in the guides of the rotor.
- the guides are profiled in accordance with the cross-sectional profile of the tumblers, the guide channels assigned to the guide part and the driver of the tumblers not being continuous in the rotor. However, like the key channel, these are open on one side on the jacket of the rotor, since they are worked into the rotor from this side.
- the lower stop surface on the guide part is thus normally on a base in a partial area of the guide, whereby the lower end position of the tumbler is determined.
- the upper end position of the tumbler is obtained when the upper end surface of the guide part at the open end of the guide bears against the inner lateral surface of the stator.
- Cylinder locks of this type are normally installed so that the open narrow side of the key channel in the rotor points upwards. This ensures that the drivers automatically move into the desired starting position in the lower region of the key channel as a result of the movement of the tumblers.
- the installation position of the lock is in many cases not identical to the later position of use. The consequence of this is that the lock can be upside down in the key withdrawal position, and in this position the tumblers fall against the open narrow side of the key channel in the rotor.
- the invention is therefore based on the object to provide an improved cylinder lock of the known type, in which in the manufacture of the tumblers the material waste is reduced and the processing is facilitated, the heavily loaded parts of the tumblers can be formed from wear-resistant material and the functionality of the Improved lock and its life is increased, as well as the driver on the tumblers in relation to the end faces the guide parts can be arranged centrally or eccentrically and the lock can be installed and used in any position. It should also be possible to convert existing cylinder locks of this type to the new solution in a simple manner.
- the design of the locking pin part and the guide part of each tumbler as one component on the one hand and the driver as a second component on the other hand results in the advantage that the two components can be produced from different materials.
- the driver is connected to the remaining part of the tumbler in a known manner in a non-positive or positive manner, for example by pressing a pin arranged on the driver into a corresponding recess on the guide part or on the tumbler.
- the two components can be assembled from the front or rear of the tumbler.
- This embodiment of the tumbler enables the use of a profiled raw wire with a significantly smaller material cross section for the production. Only the lower and the upper end surface of the guide part have to be worked out of the profile and the end surfaces of the locking pin part have to be processed.
- the driver no longer has to be milled out of the full material. This significantly reduces material waste and also simplifies processing.
- the locking pin and guide part of the tumbler can also be made in a known manner from brass or another non-ferrous metal.
- the separation of the guard locking into two components now makes it possible to use a wear-resistant material for the driver, whereby hardened steel is particularly suitable. This brings the big one Advantage that the drivers are no longer or only slightly worn out by actuating the lock or the tumblers by means of the key. The risk that a cylinder lock can no longer be opened with the key is thus avoided, and a cylinder lock equipped according to the invention has a significantly longer service life and functionality.
- the proposed solution also has the advantage that the second component with the driver can be installed in the latter both from the front directed against the key channel of the lock and from the rear of the tumbler.
- the corresponding cutouts in the first part of the tumblers can be done in a simple and known manner, e.g. Work into the first component by drilling or milling.
- the precisely fitting connection between the first and the second component is non-positive or positive, whereby press or adhesive connections have particular advantages, such as simple manufacture and shaping.
- the separation of the tumbler into two components has the further advantage that the driver can be arranged in different positions with respect to the end faces of the guide part of the tumblers, in that the recess is worked into the first component either centrally or eccentrically.
- the eccentric or asymmetrical arrangement of the driver between the upper and lower end surfaces on the guide part of each tumbler has the advantage that the position of the driver in the key channel, in the upper and lower end positions of the tumblers, can be changed with respect to the central axis of the key channel.
- the geometric dimensions of the key channel and the position of the driver with respect to the two end faces on the guide part can thus be coordinated with one another in such a way that an insertion of the key into the key channel is always guaranteed and engage the driver in the correct groove on the key.
- the distance between the upper end surface on the guide part and the central axis of the driver is determined such that in the upper end position of the tumbler, the dimension between the upper narrow side of the key channel and the central axis of the driver is greater than half the total height of the key channel, or of the mustache.
- a cylinder lock with tumblers of the type proposed according to the invention can thus be produced at a lower cost and installed in any position, and the key can also be removed in any position and properly inserted again.
- the lock can be operated correctly in any position with the reversible key, increasing the service life and functionality at the same time.
- the design of the tumblers according to the invention also enables them to be adapted for cylinder locks with special functions, for example for key switches with multiple functions, without the functionality or duration of the lock being impaired.
- Another advantage is that the dimensions and the profile of the driver can be changed in a simple manner and are no longer dependent on the processing of the entire tumbler and the rod-shaped raw material profile. For example, with otherwise the same tumblers, drivers with different diameters can be installed.
- Existing locks can be easily connected to the inventive new version can be converted by replacing the existing tumblers with those of the type according to the invention. This increases their practical value considerably.
- the cylinder lock 1 shown in FIG. 1 in front view consists of a stator 2 and a rotor 3 and a sleeve 5 which surrounds the entire lock.
- a key channel 4 is arranged in the rotor 3 and runs parallel to the longitudinal axis of the cylinder lock 1.
- the key channel 4 has a rectangular cross section and is intended for receiving a known reversible flat key, not shown.
- guides 7 are arranged approximately parallel to the broad sides 6 of the key channel 4 and at right angles to the longitudinal axis of the cylinder lock.
- tumblers 8 are arranged, which consist of a locking pin part 9, a guide part 10 and a driver 11.
- the tumbler 8 consists of a first component 12 and a second component 13 according to FIG. 2 or FIG. 4.
- the driver 11 projects into the key channel 4 and interacts with guide grooves which are attached to the broad sides of an associated reversible flat key.
- the tumblers 8 are moved via the drivers 11 parallel to the axis 36 into the opening positions in which none of the ends of the locking pin parts 9 of the tumblers 8 protrude into the bores 34, 35 in the stator 2.
- the guide part 10 of the tumblers 8 has an upper end surface 23 and a lower end surface 24, which in the extreme positions rest either on the inner surface of the stator 2 or on a base surface 37 of the guides 7.
- the central axis 25 of the drivers 11 can be positioned centrally or eccentrically to these end surfaces 23, 24.
- the distance between the upper end face 23 of the guide part 10 and the central axis 25 of the driver 11 is at least as large as half the height of the key channel 4. This ensures that the driver 11 is on the upper narrow side 33 of the key channel 4 have the correct distance, and that the tumblers 8 are always moved in the correct direction when the key is inserted into the key channel 4.
- Fig. 2 shows a tumbler 8 in an enlarged view.
- the tumbler 8 consists of the two components 12 and 13, the first component 12 comprising the locking pin part 9 and the guide part 10.
- the second component 13 consists of the driver 11 and a connecting element 14, which is pressed into a recess 15 in the first component 12.
- the recess 15 consists of a stepped bore 18 which is machined into the first component 12 from the front 16 of the tumbler 8.
- the central axis 25 of the bore 18 extends at right angles to the longitudinal axis 19 of the tumbler 8.
- the second component 13 has a stop shoulder between the connecting element 14 and the driver 11 20, which rests on the shoulder 21 of the stepped bore 18.
- the distance between the front 16 of the tumbler 8 and the end face of the driver 11 directed against the key channel is precisely determined.
- the end region 22 of the second component 13, which protrudes from the first component 12, can also have a smaller diameter.
- the tumblers 8 can be easily adapted to keys with guide grooves of different widths by inserting differently shaped second components 13.
- the distance between the central axis 25 of the driver 11 and the upper end surface 23 of the guide part 10 is greater than the distance between the central axis 25 and the lower end surface 24 of this guide part 10.
- FIG. 3 shows a partial section of a top view of a rotor 3.
- five guides 7 are incorporated into the rotor in the direction of the longitudinal axis 40 of the rotor 3 on both sides of the key channel 4. These guides 7 run at right angles to the longitudinal axis 40 and parallel to the broad sides 6 of the key channel 4.
- a tumbler 8 is mounted and guided, the guide 7 having a special cross section which corresponds to the cross section of the first component 12 of the tumbler 8 .
- the front side 16 of the tumbler 8 is aligned with the broad side 6 of the key channel 4, and the driver 11 of the second component 13 of the tumbler 8 projects into the key channel 4.
- the first component 12 of the tumbler 8 is cut to length from wire or rod material and machined, the rod material used having exactly the cross section of the first component 12.
- the rod material used In the case of the earlier tumblers formed in one piece, these had to be worked out from a rod material which corresponded to the cross section shown in broken lines in FIG. 2. Accordingly, all the surplus material indicated by dash-dotted lines in FIG. 2 had to be processed become, which caused high material losses. Due to the construction of the tumbler from a first component 12 and a second component 13, the material loss is considerably reduced and the machining of the tumblers 8 is also simplified.
- FIG. 4 shows a tumbler 8 in an enlarged view, in which the second component 13 is installed from the rear 17 of the tumbler 8.
- the first component 12 has a recess 15, which consists of a through hole 26 and a recess 27 open towards the rear 17.
- the second component 13 consists of a shoulder part 28, an end region 31, which forms the driver 11, and an adjacent region 32, which has the same diameter as the bore 26.
- the shoulder part 28 has a stop surface 29, which rests on the bottom surface 30 of the recess 27.
- the second component 13 has a precise fit and is pressed into the cutout 15 in the first component 12. Instead of the press fit, however, an adhesive connection could also be used to connect the first and second components.
- the driver 11 has a smaller diameter than the adjacent area 32 of the second component 13.
- This tumbler 8 is used in a cylinder lock 1 in which the associated flat key has guide grooves with a small width. If this tumbler 8 were used for a cylinder lock 1 with a flat key with wider guide grooves, the second component 13 could be replaced by another in which the driver 11 has the same diameter as the adjacent area 32 of the second component 13. Also in this Design of the tumbler 8 results in the advantages mentioned that the first component 12 can be produced from a wire or rod profile with a reduced cross-section, and the second component 13, or its driver 11, in terms of the different dimensions the guide groove can be adjusted in the associated flat key.
- the designs of the tumblers 8 according to the invention enable considerable savings to be made in the expensive non-ferrous metal used as the raw material.
- the second component 13 can be produced from another wear-resistant material, hardened steel parts being used in the examples described. As a result, the wear of the drivers 11 is considerably reduced or even completely avoided, which leads to a significant improvement in the functionality and the service life of the cylinder lock 1.
- the same preprocessed first components 12 can be assembled with differently dimensioned second components 13, which enables the use of the same basic elements for locks with different keys. This considerably simplifies the manufacturing process for the tumblers 8 and the cylinder locks 1, and it is also possible to convert existing locks to the improved embodiment with an increased service life.
Landscapes
- Lock And Its Accessories (AREA)
- Pens And Brushes (AREA)
- Fluid-Damping Devices (AREA)
- Eye Examination Apparatus (AREA)
- Vehicle Body Suspensions (AREA)
- Chairs Characterized By Structure (AREA)
- Valve Device For Special Equipments (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH321393 | 1993-10-25 | ||
| CH3213/93 | 1993-10-25 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0649956A2 true EP0649956A2 (fr) | 1995-04-26 |
| EP0649956A3 EP0649956A3 (en) | 1995-05-24 |
| EP0649956B1 EP0649956B1 (fr) | 1997-07-23 |
Family
ID=4251099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94810585A Expired - Lifetime EP0649956B1 (fr) | 1993-10-25 | 1994-10-05 | Serrure cylindrique |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0649956B1 (fr) |
| AT (1) | ATE155848T1 (fr) |
| DE (1) | DE59403446D1 (fr) |
| ES (1) | ES2106485T3 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997021894A1 (fr) * | 1995-12-11 | 1997-06-19 | R. Berchtold Ag | Dispositif de verrouillage avec serrure a pompe et clef plate |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB112761A (en) * | 1917-11-01 | 1918-01-24 | Eli Epstein | Improvements in and relating to Cylinder Locks. |
| US2192371A (en) * | 1939-05-05 | 1940-03-05 | Keil Francis & Son Inc | Lock construction |
| US3264852A (en) * | 1964-01-29 | 1966-08-09 | A & R Wiedemar | Cylinder lock |
| AT371195B (de) * | 1981-08-11 | 1983-06-10 | Grundmann Gmbh Geb | Zylinderschloss |
| CH669632A5 (fr) * | 1986-03-13 | 1989-03-31 | Ernst Keller |
-
1994
- 1994-10-05 DE DE59403446T patent/DE59403446D1/de not_active Expired - Lifetime
- 1994-10-05 EP EP94810585A patent/EP0649956B1/fr not_active Expired - Lifetime
- 1994-10-05 AT AT94810585T patent/ATE155848T1/de active
- 1994-10-05 ES ES94810585T patent/ES2106485T3/es not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997021894A1 (fr) * | 1995-12-11 | 1997-06-19 | R. Berchtold Ag | Dispositif de verrouillage avec serrure a pompe et clef plate |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59403446D1 (de) | 1997-09-04 |
| EP0649956A3 (en) | 1995-05-24 |
| ES2106485T3 (es) | 1997-11-01 |
| EP0649956B1 (fr) | 1997-07-23 |
| ATE155848T1 (de) | 1997-08-15 |
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