ES2298347T3 - SIDE BAR CLOSURE AND ROTARY DRUM PROVIDED WITH A SIDE BAR CONTROL. - Google Patents

Abstract

Cylinder lock of the type that has a rotating cylinder with an axis and a keyhole (12, 12 ''), the lock being controlled by rotating reciprocating drums (11) that come into selective contact by means of a side bar (16, 16 '') under control of a key (34, 34 ''), characterized in that the lock also comprises: a movable element separated from the drums (11) and which can be operated by contact with the key (34, 34 ' ') and cooperating with the sidebar (16, 16' ') to control the blocking operation of the sidebar (16, 16' ') and control the operation of the lock, in which the sliding element is a sliding (24, 24``) that slides in the cylinder parallel to the axis of the cylinder.

Description

Sidebar lock and rotating drum provided with a sidebar control.

Background of the invention 1 Field of the invention

The present invention relates to locks sidebar and drum rotary as well as the keys of the same, as disclosed in US Patent No. 3,499,302.

2 Background and prior art

Rotary or torsion drum locks, with sidebar control of the drums and keys for actuating said locks are well known in the prior art and have been manufactured and sold by Medeco Security Locks, Inc., of Salem, Virginia, for more than 20 years. Examples of this type of locks are disclosed in the following patents assigned to Medeco Security Locks, Inc. 3,499,302 Spain et al (1970) 3,722,240 Spain et al (1973) 4,635,455 Oliver (1987), 5,289. 709 Field (1994), 5,419,168 Field (1995) 5,570,601 Field (1996), 5,615,565 Field (1997) and 6,023,954 Field (2000).

Known locks that present dual security features (i.e. bidirectional), together with cooperating keys, they include locks with drums Rotating reciprocating movement and a cooperating sidebar with drums (as disclosed in US Pat. Nos. 3,499,302 and in WO 99/64703) or locks with drums non-rotating reciprocating movement and a sliding independent operation (as in FR 2 388 966 A and in US Patent No. 5,615,566).

In US Patent No. 3,499,302, an element of elongated guard is slidably arranged in a slot guard, so that a protrusion on its outer surface can be attached to a cam groove formed in the wall of the inner cylinder When the drums turn in alignment suitable, the opposite side of the guard element can be inserted inside the drums thus allowing the guard to be disengage the cam slot and rotate the lock of cylinder.

US Patent No. 5,615,566 discloses a cylinder lock and its key. The cylinder lock presents some non-rotating drums, of alternative movement, and also, the cylinder lock comprises a slot that extends parallel to the keyhole to receive a lock bar. The bar of lock presents a part of back finger, which extend into a tooth of the lock envelope and prevents rotation of the cylinder lock in relation to the envelope of the cylinder. The locking bar is deflected by a spring in the lock position The key has a raised surface, extending from one side of the pallet to mate with the front end of the locking bar, when the key is inserted in the keyhole to push the back finger out of the tooth of the envelope of the lock thus allowing the Cylinder lock rotate relative to the outer shell of the cylinder when the drums are adequately raised.

Document FR 2 388 966 A discloses a cylinder lock and its key. The cylinder lock presents a set of non-rotating, reciprocating drums, deflected by springs, which are coupled with the teeth in the key to rise to the proper position and a non-rotating drum, of alternative movement and driven by additional spring, which elevates to its proper position by coupling with the tooth of a slide, which can be moved in the direction of insertion of the key.

The slide moves to its proper position, against the force of a diversion spring, by the action of key thrust, when the key is inserted into the lock.

WO 99/64703 discloses a cylinder lock The rotation of the cylinder is controlled by interlocking drums, with reciprocating movement, in a side of the key passage and a series of locking drums Rotors arranged on the opposite side of the key passage. A locking bar deflected by a spring provides a mechanism for additional lock between the cylinder python and the housing of the cylinder and this locking bar cooperates with the rotating drums to control the operation of the cylinder. The positioning of the rotating drums in proper operational alignment, with the Locking bar, is made by means of a wavy groove formed on the key paddle.

Security is a necessary feature of a lock and the additional security that would be could apply to torsion drum locks with dual mechanisms

Another additional and very desirable feature of A high security lock is the ability to provide A master key. Having such additional security and using said means to provide a master key is obtains a capacity for use of master key systems.

In addition, it is convenient to have a key single and blind key for locks of the type they provide the additional security that control of the key.

Summary of the invention

The present invention improves the safety of the dual torsion drum lock mechanism lock, of basic class, known as the Medeco type lock and you can apply to any such lock with a mechanism of sidebar, including the original Medeco cylinder lock, the Medeco cam lock, the Medeco Biaxial® lock and the Medeco Bi-level® lock with pins interlocking, or drums, shifted ends. The invention solve the problems of the prior art by disclosing a cylinder lock as set forth in claim 1 or a method according to claim 16. The invention uses a sliding element that is usually displaced axially in the Lock cylinder and features a protrusion to enter contact with one end of a rib on a key blade. From In this way, the key positions the slide that controls the bar side to allow it to move to an unlocked position. The slide control of the sidebar and the single key and the key blade provide additional degrees of security that They allow the use of master keys and key control.

Brief description of the drawings

Figure 1 is an extreme elevation view of the rotary cylinder or python of a torsion drum lock provided with a sidebar;

Figure 2 is a longitudinal sectional view. taken along line 2-2 of Figure one;

Figure 3 is a horizontal section view taken along line 3-3 of Figure 2;

Figure 4 is a plan view of a key blind according to this invention;

Figure 5 is an extreme elevation view similar to that shown in Figure 1 with the lock in a unlocked position;

Figure 6 is a longitudinal section view taken along line 6-6 of Figure 5;

Figure 7 is a longitudinal section view taken along line 7-7 of Figure 6;

Figures 8, 9, 10 and 11 are some forms of alternative embodiments showing a sectioned key according to this invention with the slide superimposed to illustrate the possibilities of using the master key;

Figure 12 is an elevation view in section of the prior art Medeco cylinder lock for illustrate the configuration according to this invention;

Figure 13 is a sectional view taken at along line 13-13 of Figure 12;

Figure 14 is an extreme elevation view of the cylinder of a torsion drum lock presenting a sidebar and illustrating another embodiment according to this invention;

Figure 15 is a sectional view longitudinal taken along line 15-15 of Figure 14;

Figure 16 is a horizontal view taken at along line 16-16 of Figure 15;

Figure 17 is an extreme elevation view of the cylinder illustrated in Figure 14 with representation of the cylinder components in locked position;

Figure 18 is a sectional view. longitudinal taken along line 18-18 of Figure 17;

Figure 19 is a horizontal section view taken along line 19-19 of Figure 18;

Figure 20 is a plan view of a key key blind according to the present invention.

Detailed description of the embodiments preferred

As illustrated in Figures 1 to 3, a cylinder or python 10 has a keyhole 12, as is conventional in Medeco locks. The holes of the drums 14 are provided for rotating, moving drums alternative or torsion 11 (Figure 12) presenting 13 configurations on its side for receiving a bar side 16 as taught and illustrated in manufactured locks by Medeco of the prior art and the patents above identified, see Figures 12 and 13. Since the parts Remaining of these Medeco locks are known, for the sake of Simplicity have not been illustrated, except for the illustration of the prior art in Figures 12 and 13.

Sidebar 16 is located for a alternative movement transverse to the axis of the cylinder python rotary 10 and deflected by means of springs that move away from the python to provide an additional level of lock control for the lock, as is known in the prior art. The bar side features a cam 18 to cooperate with a cam slot 19 inside the housing, also as is conventional in the Medeco locks, see Figure 13. When trying to turn the python by the key, the cam slot 19 allows the sidebar to be forced inwards in the direction to the center of the cylinder. The Sidebar features 20 highlights to fit the settings 13 on the drums 11 thus allowing the bar side move to the python shaft and free from the housing when the drums are turned by the key to a position correct, as in the Medeco locks already known.

In the present invention, the sidebar it also has spaced slots 22 located along its lower surface as illustrated in Figures 1 and 2. The Highlights 23 are defined by the spaces between the slots.

Located in an axial hole 30 in the python of the cylinder there is a slide 24 that can slide to along an axis parallel to the axis of the rotating cylinder python. The own slide has a protrusion 26 at one end, which extends inside the keyhole 12 for coupling with the appropriate key as described below. A pier 28 It is designed to axially deflect the slide in hole 30 in a displacement towards the front or insertion point of The key to the lock.

In addition, the slide 24 has spikes spaced 32 on its surface, as illustrated in the Figures 1, 2 and 3. These spikes are of sufficient size and length to fit into the slots 22 of the sidebar when the slide stands properly or interferes with the projections 23 on the bar lateral when not properly located. As illustrated in the Figure 2, the pins 32 in the slide and the projections 23 in the sidebar 16 interact so that the inward displacement of the sidebar blocking, of this way, the operation of the sidebar and therefore of the lock.

As illustrated in Figure 6, when the spring 28 of the slide has been compressed and the pins 32 in the Sliding are located inside slots 22 of the bar side, the sidebar is allowed to function as it is illustrated in Figures 5 and 6. Thus, the slide provides a third level of lock control in addition to movement reciprocal and rotation of the drums.

A single blind key 34 may be provided with Suitable teeth 35 for operating the lock. The blind key it has a head 36 and a pallet 38. The pallet presents a profile that matches the profile of the keyhole 12. In the part side of the blind key (and the key itself) there is a rib 40 that has a contact surface 42 formed to come into contact with shoulder 26 on the slide 24. As illustrated in Figure 6, when the key and the end of rib 42 comes into contact with shoulder 26 compress spring 28 and position the slide so that it does not interfere with the operation of the sidebar.

Figures 8, 9, 10 and 11 illustrate other embodiments that have different configurations of the contact surface 42 in the rib of the key 40 and representing the slide 24 superimposed, the slide projection 26 presenting a complementary surface with the contact surface 42. Figure 8 illustrates the same embodiment depicted in Figures 1 to 7, but in the open position of Figure 6. In Figure 9, the projection of the slide is like a step 44 to receive a similarly configured key rib end 42a. Figure 10 illustrates an inclined surface 46 for cooperating with an inclined surface 42b of the far end of the key rib 40. Figure 11 depicts a tooth-shaped surface 48 on the shoulder 26 for cooperating with a shape rib surface Complementary 42. To illustrate the possibilities of using a master key, the key represented in Figure 8 will correctly position the slide illustrated in Figure 8 and the key in Figure 11 will correctly operate the slide shown in Figure 11. The key represented in Figure 8, you will also position the slide in Figure 11 correctly. However, the key shown in Figure 11 will push the slide in Figure 8 too far and the lock will not open. Similarly, the key shown in Figure 8 will not operate a slide configured as illustrated in Figure 9 or Figure 10, because it would push the slide too far and the lock will not open. Providing different keys with differently configured distant ends of the key rib and providing different cylinders with protrusions of the
With different configurations, the cylinders can be selectively operated by the different keys.

Figures 14 to 20 illustrate a form of alternative embodiment in which the blocking or sliding element instead of being a rod that can be inserted at the end of the cylinder is shaped like a block, which can be inserted from the bottom of the keyhole. This provision is illustrated in more detail referring to Figures 14, 15 and 16 which they represent the slide in position so as not to block the bar side. As illustrated, Python 10 presents its keyhole 12 Open at the bottom. 16 'sidebar features grooves spaced 22 'that will allow the sidebar to break free or lock by the slide as described below. As in the case of the embodiment described above, the invention is in the environment of the drum locks of Medeco torsion, as illustrated in Figures 12 and 13, in which sidebar 16 has an alternative movement transverse to Python shaft of the cylinder to provide a higher level of lock and sidebar is diverted inland by springs  to be held or moved over and out of the cam slot 19 inside the housing, which cooperates with cam 18 in the sidebar, as illustrated in Figures 16 and 19 and how it is conventional in Medeco locks. When you try to turn the python spinning a key, cam 18 makes the bar side 16 'be forced inward towards the center of the cylinder. The sidebar features 20 'projections to cooperate with torsion drums, as is known in this technique. Further, the sidebar has 22 'spaced slots located along of its lateral surface.

The slide, in this embodiment, is a block-shaped element 24 'configured to fit inside of the cylinder envelope and to be inserted from the part open bottom of the keyhole 12. A 28 'spring is provided which deflects the slide towards the head of the key, as illustrated in Figures 15 and 18. The slide axially displaces the key in space 30 '. The python-shaped slide features spaced spikes 32 'on its upper surface, as illustrated in Figures 15 and 18. These spikes can move to the inside the slots 22, in the sidebar, when the slide it is positioned by the key, as illustrated in Figures 15 and 16. Without However, as illustrated in Figure 18, when the key is not moving the slide, the spikes 32 'intersect with the parts of the sidebar outside the slots 22 'as indicated by the interference points 33 and this prevents the sidebar from axially move inwards and prevents the lock for unlocking. This would happen in everything except when a suitable key, such as key 34 ', represented in Figure 20, is inserted into the keyhole 12 to move the slide element 24 'from the normal position illustrated in Figure 18 to the unlocked position shown in Figure 15. This operation is performed by a highlight additional 26 'in the slide 24', which extends into the interior of the keyhole so that it intersects with the profile of the pallet of the key 38 '. The key blade has a stop 42 'that enters contact with shoulder 26 'and compress spring 28' when the key is inserted to allow the sidebar to be operated when the pins 32 'are in the slots 22', as illustrated in Figure 15

Under operating conditions, the key 34 ' is inserted into the keyhole 12 to move the slide 24 'against the spring 28 'and when the projections 32' are in the position to cooperate with the slots 22 ', the sidebar 16' is can be operated to allow the key to rotate the python and operate the lock. Unless part 42 'of key 34' enters contact with shoulder 35, the slide or block 24 'will block the operation of the lock.

The keys shown in Figures 8 to 11 They could also be used with this embodiment.

The advantage of this construction is that it allows using a master key and provides security additional because it does not require that the techniques be used conventional pin and drum master key to configure locks with the selective capacity to use a master key. When used to complement the techniques conventional use of a master key, provides a additional capacity offered by the system to the user safer.

Although the present invention has been described referring to the particular embodiments of this invention, it is understood that these embodiments are provided solely for illustrative purposes of the application and principles of the invention. You can make numerous others configurations and other arrangements can be designed without thereby departing from the scope of the invention, according to the attached claims.

Claims (17)

1. Cylinder lock of the type that has a rotating cylinder with an axis and a keyhole (12, 12 '), the lock being controlled by rotating reciprocating drums (11) that come into selective contact by means of a side bar (16 , 16 ') under the control of a key (34, 34'), characterized in that the lock also includes: a movable element separated from the drums (11) and that can be operated by contact with the key (34, 34 ') and which cooperates with the sidebar (16, 16 ') to control the Sidebar lock operation (16, 16 ') and control the operation of the lock, in which the scrollable element is a slide (24, 24 ') that slides in the cylinder parallel to the cylinder shaft 2. Cylinder lock according to claim 1, in which the slide (24, 24 ') deviates in one direction parallel to the axis of the cylinder. 3. Cylinder lock according to claim 2, in which the offset is provided by a spring (28, 28 ') in the cylinder to force the sliding of the slide (24, 24 ') in one direction towards an entrance of the keyhole (12, 12 '). 4. Cylinder lock according to claim 2, in which the slide (24, 24 ') has an extension that penetrates the keyhole (1,2 12 ') to come into contact with the key (34, 34 '). 5. Cylinder lock according to claim 4, in which the extension is a highlight (26, 26 ') configured to cooperate with a part of a key (34, 34 ') when inserted into the keyhole (12, 12 '). 6. Cylinder lock according to claim 2, in which the slide (24, 24 ') can be inserted inside of the lock through a keyhole (12, 12 ') that opens in its interior. 7. Cylinder lock according to claim 2, in which the slide (24, 24 ') can be inserted longitudinally at the end of the cylinder. 8. Combination of a cylinder lock according to claim 1 and a key (34, 34 '), fitting the key (34, 34 ') inside a keyhole (12, 12') of the cylinder, a part of a rib (40) being located in the key for come into contact and control the blocking movement of the element movable when the key (34, 34 ') is inserted into the keyhole (12.12 '). 9. Master key system comprising a cylinder lock according to claim 1 and keys according to claim 8, presenting the different keys configurations in the key and the slide (24, 24 ') in such a way that a single key will work to control and another key will not will control the operation of the slide (24, 24 '). 10. Cylinder lock according to claim 1, wherein it comprises a spring (28, 28 ') to deflect the slide (24, 24') towards the entrance of the keyhole (12,12 '), the slide (24, 24') being supported by the cylinder, presenting the slide ( 24, 24 ') spaced spikes (32,
32 '), also presenting the sidebar (16, 16 ') spaced projections (23), interfering with the spikes (32, 32 ') on the slide (24, 24 ') and the projections (23) on the sidebar (16, 16 ') with each other to prevent the operation of the bar side (16, 16 ') unless the slide (24, 24') moves against the spring of the spring (28, 28 ') until the pins (32, 32 ') of the slide (24, 24') are inside about spaces between the side bar highlights (23) and presenting the slide (24, 24 ') a highlight (26, 26 ') with a contact surface that extends into the inside the keyhole (12, 12 ') to cooperate and activate by a suitable key (34, 34 ') that can be inserted into the keyhole (12, 12 '). 11. Cylinder lock according to claim 10, wherein the contact surface in the projection of the slide (26, 26 ') is configured to cooperate with several contact surfaces (42, 42 ') configured in the keys (34, 34 ') for the lock in order to provide a key teacher. 12. Cylinder Lock Combination according to claim 10 and a key, the lock cylinder being controlled by the rotating reciprocating drums (11) that enter in contact and control the sidebar (16, 16 '), the key (34, 34 ') being configured for its insertion into the keyhole (12, 12 '), presenting the key (34, 34') a contact surface (42, 42 ') to come into contact with the contact surface of the shoulder (26, 26 ') on the slide (24, 24 ') and to move the slide (24, 24') against the offset from the spring (28, 28 ') to a position where the pins (32, 32') on the slide (24, 24 ') they release the projections (23) on the bar lateral (16, 16 '). 13. Combination according to claim 12, in which the slide (24, 24 ') can be inserted inside the lock through the bottom of the keyhole (12, 12 '). 14. Combination according to claim 12, in which the slide (24, 24 ') can be inserted longitudinally in the inside of the lock through an opening in the end of the cylinder. 15. Combination of a cylinder lock according to claim 8 and a key (34, 34 '), wherein the key (34, 34 ') comprises a key head (36) and a key blade (38) with a profile complementary to the configuration of the keyhole profile (12, 12 '), characterized in that the slide (24, 24 ') has a shoulder (26, 26') that extends inside the keyhole (12, 12 ') and also characterized in that the key (34, 34') comprises at least a rib (40) in the key (34, 34 ') and a contact surface (42, 42') in the rib (40) to cooperate with the shoulder (26, 26 ') and to move the slide (24, 24 ') in the cylinder parallel to the axis of the cylinder to unlock the sidebar. 16. Procedure for operating a lock cylinder according to claim 1, said said comprising process: raise and rotate the drums (11) to align the configurations (13) of the drums (11) with highlights (20) of the sidebar (16, 16 ') and move the slide (24, 24 ') parallel to the cylinder axis towards a position where it cooperates with the bar side to control the movement of the sidebar lock (16, 16 ') and control the operation of the lock. 17. Method according to claim 16, which includes: provide a key (34, 34 ') that presents a head (36) and a pallet (38) extending from the head (36) with teeth (35) along one edge of the blade (38) constructed and arranged to couple the drums (11) and a contact surface (42, 42 ') on the pallet (38) constructed and arranged to couple the slide (24, 24 ') when the key (34, 34 ') is inserted into the keyhole (12, 12'), and insert the key (34, 34 ') into the keyhole (12, 12 ') doing so:

to)

that the teeth (35) of the key (34, 34 ') are coupled with the drums (11) to raise and rotate the drums (11) in order to align the configurations (13) of the drums (11) with the projections (20) of the sidebar (16, 16 '), and

b)

that the contact surface (42, 42 ') on the pallet (38) is coupled with a shoulder (26, 26 ') of the slide (24, 24') to move the slide (24, 24 ') parallel to the axis of the cylinder towards a position in which it cooperates with the sidebar to control the Sidebar lock motion (16, 16 ') and control the operation of the lock.