EP0713558B1 - Closure system, in particular for motor vehicles and building equipment - Google Patents

Description

The invention relates to a new locking system according to the Preamble of claims 1 and 17, which at the same time high usage properties can be produced inexpensively and is therefore a mass product, especially for the Use in motor vehicles and building equipment.

From DE 20 41 368 B2 is a cylinder lock with a changeable Key secret known, instead of the key bit at least two arranged on the key shaft Adjustment rings are provided, which defined in the axial direction Take positions within the lock cylinder can. The setting rings of the key are rotatable Locking rings assigned to the lock cylinder. Radially directed Notches in the setting rings correspond to spring-loaded ones Locking pins of the tumbler rings in such a way that only with a suitable key, actuation of the locking system is possible. This cylinder lock allows in simpler Reprogramming after inserting the key of the code, however, is the constructive structure very complicated and the lock assembly correspondingly complex. The large number of intended code variants caused also a large number of notches, tumbler pins and feathers, leading to increasing tolerance sensitivity leads. A realization of the described Systems in a lock cylinder with a comparatively small size Diameter seems hardly possible, so that its use in Motor vehicles hardly come into question.

DE 41 34 990 C1 describes a locking device whose cylinder lock is freely rotatable in the cylinder housing has two-part locking core. Are stored in it Locking elements that can be inserted by a plunger through a shaft Key axially shifted against the pressure of springs become. If the key code matches the locking recesses form the code of the locking core Blocking elements a common escape just below the Locking lug of a blocking element, so that both in each other positive engagement can occur if the key is turned to actuate the locking system. Using a non-passable key can the blocking element do not leave the recess in the cylinder housing, which prevents rotation of the locking core.

The locking system described is based on a new code programmable, but this requires exchange, at least but the rearrangement of the locking elements. Because everyone Individual code (of the overall code of the locking system) a specific one Locking element is assigned requires assembly high level of care.

The invention has for its object a locking system to develop, which is characterized by a simplified structure and is characterized by inexpensive manufacturability. Furthermore the lock core should be inserted when the key is inserted for the first time be programmable on the code of this key and / or the locking system should be independent from one side of the code of the locking core and whether of the on the other side, a key is fully or partially inserted is through a handle integrated into the locking system can be operated (e.g. for the purpose of emergency operation).

According to the invention, the task is performed by a lock cylinder and a key that can be inserted therein with in insertion directions pointing plunger released, the two-part Latching element made from one another and movable in one Locking position to each other fixed parts. These parts, referred to as carriers and riders, are in a positive or frictional intervention. One in the rider incorporated latch opening occurs when a fit is introduced Key opposite a latch, one Blocking element is molded. The blocking element is stored in a recess of the closing core is radially displaceable and engages in the zero position in another, arranged in the housing Recess that the blocking of the locking system serves in the event that when using a non-passable Key the locking lug of the blocking element is not in the Snap recesses of the individual carriers are inserted can.

The locking system according to the invention is first in a non-coded zero position, i.e. that from a Carrier and a rider existing locking element has at least such a length that when inserting the provided key corresponds to the smallest code value. In this case, the pestle concerned would be the key the locking element mounted against an axially acting spring just don't move.

The locking elements fill in the non-coded zero position the space between a stop surface on the closing core side on the side of the key insertion slot and a stop surface of an opposite one Stop element as far as possible. By introducing the Key press the plunger of the key against the spring-loaded Carrier and slide them according to the respective Ram length differently in the axial direction. There the riders are supported on a stop element, it comes at the same time to a shift in the relative position of Carrier and rider to each other. After the key is complete is introduced, the key code is the locking core embossed, i.e. according to the gradation of the length of the Key ram was moved from the carrier and Riders to each other and thus an adequate shortening of the individual locking elements.

After the coding process is completed by the first time Insert the key and remove it the shaft of the lock cylinder, push compression springs that act on the support of the locking elements, each individual locking element against a front, key shaft-side stop surface. In this "rest position" the recesses form the rider does not have a closed escape (transversal Channel), in which the detent (transverse web) of the blocking element can be inserted. Through the Shift of carrier and rider to each other during the Coding process are now the notches of the individual locking elements in different axial Distances, e.g. measured from the front stop surface from which the locking elements are in their rest position support.

Preferably lie in the non-coded zero position, in of the free ends of the riders in close proximity of the stop element should be, all locking recesses at the same height and directly opposite from the locking lug of the blocking element. Under this constellation the locking system can also be carried out without a Coding process are operated. You use it for this a key without a plunger, which is in the shaft of the Lock cylinder, but not moving on the locking elements can intervene. With careful handling, the actuation is also with other objects, such as. B. a screwdriver, executable.

A spring / locking element that is between the locking elements and one part of the two-part body of the Closing core supports, with its spring force ensures one permanent but slidable intervention between Carriers and riders until the end of the coding process. Then the position of the carrier stamped on the key can and rider are locked to each other. this happens by moving the spring / locking element in the axial Direction, causing not just further shifts between which preferably interlock with each other standing parts of the locking elements (brackets and riders) prevented should be. At the same time, there is a shift of the stop element on which the free ends supported the rider during the coding process. This is necessary to ensure sufficient axial displacement of the coded locking elements during lock actuation guarantee.

The displacement of the spring / locking element from it Spring position in the locking position can for example by means of a push pin, on the one hand with the Spring / locking element is connected and on the other hand the front plate of the lock cylinder during the spring position protrudes. By pushing in the push pin the spring / locking element comes into its locking position.

Another, independent of the variant described above, but also a combinable variant of the invention describes the independent secondary claim 17. It provides that on one of the two sides of the lock cylinder Opening / closing bolt is arranged, preferably as integral part of the lock cylinder when actuated engaged with associated stop surfaces of the locking elements occurs. Have the stop surfaces of all locking elements the same distance from their recesses. When reaching a stop position on the housing side of the opening / closing bolt then there are all recesses with respect to the locking lug of the blocking element in the engaged position, so that a rotational movement of the closing core is carried out can be.

The variant described is particularly suitable for the Use in building equipment as an emergency or panic locking system, which allows operation without any problems when the locking system is in the locking position or if the key is on the opposite Side is in the shaft of the lock cylinder.

So it can be from the side of the opening / closing bolt locked room must always be unlocked.

The opening / closing bolt preferably has inside the Lock cylinder a web running transversely to the lock axis on when the opening / closing bolt is pulled into its Stop position on the housing with the assigned stop surfaces all locking elements engages and the assigns the locking recesses to the locking lug. Then is a rotation of the opening / closing bolt or the closing core and thus the execution of the unlocking or locking process possible.

In the combination of the inventive features of the claims 1 and 17 you get a locking system that consists of both uncoded zero position of the lock cylinder by a Key can be coded the first time it is inserted, but also the advantage of emergency actuation from one side locking room.

At this point it should be noted that the code of the described locking system after removing the locking core can be reset. In particular, it is also possible re-encoding again using a key after the existing of porters and riders Snap elements again brought into the non-coded zero position were.

Figur 1 -

schematische, perspektivische Darstellung eines durch einen Schlüssel programmierbaren Schließsystems im codierten Zustand mit verriegeltem Code,

Figur 1a -

Ansicht der der schlüsselseitigen Stirnseite abgewandten Stirnseite des Schließsystems (Rückseite),

Figur 1b -

Ansicht der schlüsselseitigen Stirnseite des Schließsystems (Vorderseite),

Figur 2a -

Querschnitt durch ein Schließsystem gemäß Figur 1 in nichtcodierter Nullposition,

Figur 2b -

Querschnitt durch ein Schließsystem gemäß Figur 1 mit vollständig eingeführtem Schlüssel in Codierposition,

Figur 2c -

Querschnitt durch ein Schließsystem gemäß Figur 1 mit verriegeltem Code des programmierten Schließkerns in Ruhestellung,

Figur 3 -

Explosivdarstellung eines aus Träger und Reiter bestehenden Rastelementes mit schematisch dargestelltem Öffnungs-/Schließriegel,

Figur 4a -

schematische, perspektivische Darstellung von codierten Rastelementen in Ruhestellung,

Figur 4b -

schematische, perspektivische Darstellung von codierten Rastelementen bei Betätigung des Schließsystems durch den Öffnungs-/Schließriegel (Notbetätigung),

Figur 5 -

schematisch den Längsschnitt des rückseitigen Teiles des erfindungsgemäßen Schließsystems mit einer Freilaufvorrichtung,

Figur 5a -

eine perspektivische Ansicht des der Freilaufvorrichtung zugewandten Schließkernendes und

Figur 5b -

eine Explosionsdarstellung der funktionell wesentlichen Teile der Freilaufvorrichtung gemäß Fig.5.

The invention is explained in more detail below on the basis of exemplary embodiments and the figures shown. Show it:

Figure 1 -

schematic, perspective representation of a locking system programmable by a key in the coded state with locked code,

Figure 1a -

View of the front side of the locking system facing away from the key-side front side (rear side),

Figure 1b -

View of the key side of the locking system (front),

Figure 2a -

Cross section through a locking system according to FIG. 1 in non-coded zero position,

Figure 2b -

Cross section through a locking system according to FIG. 1 with the key fully inserted in the coding position,

Figure 2c -

Cross section through a locking system according to FIG. 1 with locked code of the programmed locking core in the rest position,

Figure 3 -

Exploded view of a locking element consisting of carrier and rider with a schematically shown opening / closing bolt,

Figure 4a -

schematic, perspective representation of coded locking elements in the rest position,

Figure 4b -

schematic, perspective representation of coded locking elements when the locking system is actuated by the opening / closing bolt (emergency actuation),

Figure 5 -

schematically the longitudinal section of the rear part of the locking system according to the invention with a freewheel device,

Figure 5a -

a perspective view of the closing core end facing the freewheel device and

Figure 5b -

an exploded view of the functionally essential parts of the freewheel device according to Figure 5.

The structure and operation of the inventive locking system that can be coded by a key Figures 1 to 2c illustrates. The schematic Representations give a design variant of the principle of the invention with positive engagement between the carrier 3 and the rider 4 of a locking element again.

A two-part is stored within the cylindrical housing 1 (Axially divided) closing core 2, which consists of part 2a and part 2b. It takes all other important functions Components of the locking system and leads them during operation.

In part 2a, a recess 50 is incorporated, in which the Blocking element 5 is guided radially movable. A feather 52 presses the blocking element 5 with its roof-shaped head region 5a radially outwards against the wall of the housing 1. In the neutral position of the locking core, in which the The key can be inserted and exported corresponds to the Recess 50 with the recess 50a in the housing 1. Only if the blocking element 5 is lowered against the pressure of the spring 52 leaves, the locking core can be rotated.

The other part 2b of the locking core supports the carrier 3 and tab 4 existing locking elements. In between are however, a sliding plate 9 and a spring / locking element 6 arranged. The spring / locking element 6 can formed as a stamped and bent part from sheet metal or plastic be. Extend radially outward on the spring / locking element 6 rigid support blocks 61 while spring tongues in the opposite direction Spread 60 and the locking elements (consisting of Support bracket 3 and rider 4) over the sliding plate 9. in the Part 2b are recesses 610 for receiving the support blocks 61 provided as long as the spring / locking element 6 not moved into its locking position (see Figure 2c) was and still in its spring position (see Figure 2a and 2b).

The rear end of part 2b is delimited by the bottom 24 which a number corresponding to the number of locking elements Carrying pins 240 for storing compression springs 31, which are supported on the other hand on the carrier 3 and thus the locking elements against the stop surface 21 in the area of Press front plate 23. On the inner wall of the floor 24 the stop element 7 is also supported, the stop surface 7a assigned to the free ends of tab 4 as long is until the spring / locking element 6 in the locking position is shifted and the blocking element 7 in a Recess 20 lifts in part 2a. According to the present embodiment the blocking element 7 has the contour a rectangular box with open faces on both sides.

Figure 2a shows a lock cylinder with a lock core in uncoded zero position. The locking element fills 3,4 the space between the front stop surface 21 and the rear stop element 7 completely. The spring / locking element 6 is in the spring position and supports the locking elements via the sliding plate 9. Directly opposite the locking lug 51 of the blocking element 5 are the Locking recesses 41 and form a transverse channel, into which the latch 51 can be lowered. So it is possible, the locking system also in the non-coded zero position to operate, e.g. with a screwdriver.

From Figure 2b it can be seen that a key 10 with in Plungers 100 fully inserted (up to Stop) in the shaft of the locking core on side A is introduced. This made the carrier 3 according to the Length of the respective plunger 100 in the axial direction and shifted relative to the rider 4 against the force of the spring 31, which is synonymous with the coding of the locking core; the code of key 10 was thereby on the lock core transfer.

Carrier 3 and rider 4 are over their teeth 30.40 positively connected with each other. It is sawtooth-shaped formed, the flatter flanks of the toothing 30.40 in the direction of displacement of the parts 3.4 to each other point. The pitch of the toothing preferably corresponds the distance between two neighboring code values.

Figure 2c shows the locking system with the code locked Closing core. For this, the outside was through the front panel 23 projecting push pin 62 pressed into the interior, whereby the spring / locking element 6 moved analogously has been. The support blocks 61 are now supported on the inner one Base area 200b of part 2b and fill the previously distance bridged by the spring tongues 60 essentially out. As a result, the spring tongues 60 are pressed and ensure no freedom of movement between carrier 3 and rider 4 more. You can therefore no longer move towards each other.

By raising the spring / locking element 6 also the blocking element 7 raised, causing the stop surface 7a is removed from the free end of the rider. Well now the locking element moved beyond the stop surface 7a become. There is a palpation of the original zero position not possible anymore.

Furthermore, in the (lifted) locking position of the spring / locking element 6 disengage a detent spring 600, which in an associated recess 22 in part 2b engages and so prevents the code from locking of the locking core can be lifted again without that Disassemble locking system. In these circumstances, too the one-piece design of spring / locking element 6 and push pin 62 not critical.

To ensure good mobility of the spring-loaded locking elements 3.4 to ensure are between the neighboring ones Locking elements spacer elements 8 which are located between the inner base 200a of part 2a and the slide plate 9 extend, the height of which should be slightly larger than the height of the locking element consisting of carrier 3 and rider 4. The sliding element 9 and the spacer elements 8 are also available as a one-piece component.

Figures 3 and 4 show embodiments of the second Variant of the invention, based on an emergency or panic locking system relate and move forward with the can be combined described first inventive variant.

Accordingly, the tabs 4 'have extensions 4a which extend towards side B, where one in the locking system integrated opening / closing bolt 90 arranged is. The carrier 3 'and the tab 4' in turn protrude their teeth 30, 40 positively connected to each other. As long as the relative position of the two parts 3, 4 has not been locked, they can be moved towards each other, to transfer the code of the key to the locking core. The locking recess 41 of each tab 4 takes theirs specific position so that when inserting a fit Key the recesses 41 of all tabs 4 of the The locking core form an escape into which the catch of a Can engage locking element

The tab 4 'shown in Figure 3 has an inner recess 430 for storing a stop element that the fulfills the same function as the stop element 7 in FIG 1. Its surface analogous to the stop surface 7a occurs during the coding process using the key with the stop surface 43 a of the recess 430 in engagement. The most Free end of the extension 4a adjoining recess 45 is limited by the stop surfaces 46a and 46b.

When operating the opening / closing bolt 90 by pulling its web engages in a stop position on the housing side 95 with its stop surface 96b on the stop surface 46b of the tab 4 ', whereby the locking elements 3', 4 'against the Spring force moved and the recesses 41 directly the Locking nose of a locking element can be assigned. Subsequently can by rotating the opening / closing bolt 90 Locking system can be operated. The distance between the stop surfaces 46b and the locking recesses 41 of the Tab 4 'for all locking elements 3', 4 'of the same size.

The distance between the stop surfaces 46a, 46b is like this chosen that the stop surface 96a of the web 95 of the Opening / closing bolt 90, the stop surface 46a of the Recess 45 just not touched when the locking elements 3 ', 4' in their forward rest position (at the stop 21 - see Figure 1). Of course, the distance can also be chosen larger. E.g. can the recess 45 such Width have that the stop surface 96a at a fully inserted key on the other side A still not in contact with the stop surface 46a of the rider 4 ' is coming. The latter would have the advantage that when the Locking system with a key on the opening / closing bolt no axially acting force is exerted.

Figures 4a and 4b give schematic, perspective Representations of the inside of a coded locking core again, so that carrier 3 "and tab 4" of each Locking elements 3 ", 4" according to the length of each Tappet of the key are positioned to each other.

In Figure 4a the rest position is shown, in which the Carrier 3 "from the springs 31" against a front stop on the A side. In this rest position are the recesses 41 of the tab 4 "accordingly their coded setting at different axially aligned points, so that a lowering of the Blocking element 5 is not possible; the latch 51 can do not engage in the recesses 41. Consequently the locking system cannot be operated. One from Opening / closing bolt 90 applied and over its web 95 to the locking elements 3 ", 4" transmitted torque cannot lead to the rotation of the locking core.

Figure 4b shows the locking system in the closed position, wherein all the recesses 41 are next to each other and form a channel in which the latch 51 can engage. This closing position is achieved by pulling the opening / closing bolt reached in a stop. In doing so, the Stop surface 96b of the web 95 on the stop surfaces 46b rider 4 "and pulls them against the force of the springs 31 "from the rest position to the closed position. Now you can by rotating the opening / closing bolt 90 the blocking element 5 are lowered radially and the latch 51 in the Engage the recess 41. An actuation of the locking system in particular an emergency operation from side B of the Opening / closing bolt 90 is therefore easily possible.

To avoid that with a locking cylinder that is in the locking position, the blocking element the corresponding force transmission via the locking core was canceled , it has proven to be advantageous to the Lock cylinder to be provided with a freewheel device. Such a device is shown in FIGS. 5 to 5b:

The locking cylinder 110 has an inner cylinder 111 on which is rotatably supported within the housing 112. Of the Inner cylinder 111 is provided with a recess 113 in the blocking element arranged on the closing core 115 114 engages (locked position of the locking cylinder).

The locking core 115 and the locking pin 116 of the not in individual lock shown are axially displaceable Driver ring 117 connected, the locking pin 116 positively into a first recess 118 of the Driver ring 117 and the locking core 115 via a cone-shaped projection 119 in a form-fitting manner in an opposite one second recess 120 of the driving ring 117 protrudes.

If the closing core 115 is now rotated by force, it rotates also the inner cylinder 111 via the blocking element 114. This presses over notches 121 of the inner cylinder on the driving ring side 111 against corresponding coupling ring lugs 122 a coupling ring connected to the driving ring 117 123, so that the driving ring 117 corresponding to the pressure Springs 124 pressed to the locking pin 116 and the cone-shaped projection 119 of the locking core 115 from the Recess 120 is pulled out. Another turn of the The locking core 115 therefore does not cause the locking pin to rotate 116 more.

By a linear displacement movement of the driving ring 117 ensure that there are 123 sliding stubs on the coupling ring 125, 126 provided, the axial recesses 127, 128 of the Housing 112 are performed.

If a key matching the locking cylinder 110 is inserted into the appropriate key slot introduced, so it will Blocking element 114 drawn into the locking core 115. At Rotation of the key and thus also the locking core 115 is the driver ring on the pin-shaped projection 119 117 and the locking pin 116 of the lock turned (unlocked Position).

The invention is of course not based on the described Embodiments limited. For example possible as a key for closing and opening the Lock cylinder also use a reversible key. A such key consists of a fixed base part, in that introduced the appropriate number of plungers on both sides are. The locking cylinder must contain a locking core the sufficient space for each not Latching elements (2) displacing tappet.

Reference list

1 -

casing

10 -

key

100 -

Pestle

2 -

Locking core

2a -

Part of the main body of the locking core (upper Half)

2 B -

Part of the main body of the locking core (lower Half)

20 -

Recess

21 -

Stop surface for beam 3

22 -

Recess

23 -

Front panel

24 -

ground

200a -

inner footprint

200b -

inner footprint

240 -

Locating pin for compression spring

3 -

carrier

3 '-

carrier

3 "-

carrier

30 -

Gear element

31 -

feather

4 -

equestrian

4 '-

equestrian

4 "-

equestrian

4a -

Process of the rider

40 -

Gear elements

41 -

Notch

43 -

Stop surface

43a -

Stop surface

430 -

Recess

45 -

Recess

46a -

Stop surface

46b -

Stop surface

5 -

Blocking element

5a -

Head area

50 -

Recess

50a -

Recess

51 -

Latch

52 -

feather

6 -

Spring / locking element

60 -

Spring tongue

61 -

Trestle

62 -

Push pin

600 -

Detent spring

610 -

Recess

7 -

Stop element

7a -

Stop surface

8th -

Spacer

9 -

Sliding plate

90 -

Opening - // locking bolt (inner key)

95 -

web

96a -

Stop surface

96b -

Stop surface

110 -

Lock cylinder, locking system

111 -

Inner cylinder

112 -

casing

113 -

Recess

114 -

Blocking element

115 -

Locking core

116 -

Locking pin

117 -

Drive ring

118 -

Recess

119 -

cone-shaped projection

120 -

Recess

121 -

score

122 -

Coupling ring nose

123 -

Clutch ring

124 -

feather

125.126 -

Sliding stub

127.128 -

Recesses

A -

Side of the locking cylinder

B -

Side of the locking cylinder

Claims (23)

1. Closure system, in particular for motor vehicles and building equipment, consisting of a lock cylinder and a key which can be introduced into the lock with keybit elements pointing in the direction of introduction, in which situation a lock plug is rotatably mounted in a housing, which features at least one engagement element, capable of being displaced against spring pressure in the direction of introduction of the key, and featuring an engagement cutout, in which the engagement nose of a blocking element can engage when it reaches the coded position of the engagement elements, characterised in that the engagement element consists of a carrier (3, 3') and a rider (4, 4'), which are capable of mutual displacement and engage each other in positive and frictional fit, in which situation machined into the rider (4, 4') is an engagement cutout (41) allocated to the engagement nose (51), and with a contact surface (43) provided at the free end, which in a non-coded zero position of the engagement element is in contact with a stop element (7), and that a spring/arresting element (6) is provided, which on the one hand is supported on the inside base surface (200b) of the base body (2a) of the lock plug (2) and on the other is supported on the carrier (3, 3'), and that the spring/arresting element (6) is capable of being brought into an arresting position in which the relative position of carrier (3, 3') and rider (4) is determined and the contact element (7) is removed from its engagement with the contact surface (43) of the rider (4, 4').
2. Closure system according to Claim 1, characterised in that the lock plug (2) consists of a first base body (2a), in which a spring-loaded blocking element (3) is mounted, and a second body element (2b) for accommodating the spring-loaded engagement element (30, 40).
3. Closure system according to Claims 1 and 2, characterised in that a cutout (50a) is allocated to the blocking element (5) in the introduction position of the key (10) on the side of the housing (1), which is bordered by sliding surfaces which are directed inwards and circumferentially, with the result that, when the lock plug (2) is rotated, a radial movement of the blocking element (5) is incurred.
4. Closure system according to Claims 1 and 2, characterised in that the engagement element consisting of carrier (3) and rider (4) in the non-coded zero position very largely fills out the gap between the contact surface (21) at the front plate (23) of the base body (2b) and the contact element (7).
5. Closure system according to Claim 1, characterised in that the carrier (3) and the rider (4) engage with one another by means of teeth elements (30, 40), and that the division of the teeth elements (30, 40) concurs with the distance between two adjacent code values.
6. Closure system according to Claims 1 and 2, characterised in that the teeth elements (30, 40) are designed in sawtooth pattern, in which situation the flatter teeth flanks point in the direction of displacement (insertion direction of the key).
7. Closure system according to Claim 1, characterised in that the spring/arresting element (6) is designed to be capable of displacement, in which situation spring elements (60) designed as spring-loaded tongues press in the direction of the carrier (3), and support blocks (61) project in the opposite direction, in which situation the support blocks (61) are mounted in cutouts (610) of the base body (2b), while the support blocks (61) in the coded position are supported on the inner base surface (200b) of the base body.
8. Closure system according to Claim 7, characterised in that the height of the support blocks (61) essentially corresponds to the free distance between the inside base surface (200b) and the carrier (3), with the result that the teeth (30, 40) can no longer become disengaged.
9. Closure system according to Claim 7, characterised in that the spring/arresting element (6) is of one piece, designed for example as a stamped sheet metal component or plastic injection-moulded component.
10. Closure system according to Claim 7, characterised in that a thrust pin (62) is provided to displace the spring/arresting element (6) into its arresting position, which penetrates through the front plate (23) of the base body (2b) and engages with its inner end at the spring/arresting element (6).
11. Closure system according to Claims 7 and 10, characterised in that the thrust pin (62) or similar item is formed as a single piece at the spring/arresting element (6).
12. Closure system according to Claim 1, characterised in that the spring/arresting element (6) is capable of being locked in its arresting position.
13. Closure system according to Claim 12, characterised in that the spring/arresting element (6) features an engagement spring (600), which in the arresting position engages in a recess (22) of the base body (2b).
14. Closure system according to Claims 1 and 7, characterised in that a slide plate (9) or similar item is provided between the spring/arresting element (6) and the carrier (3).
15. Closure system according to Claim 1, characterised in that spacer elements (8) are arranged between the spring/arresting element (6) and the inner base surface (200a) of the base body (2a) located opposite, the height of the said spacer elements corresponding at least to the height of the engagement element consisting of the bearer (3) and the rider (4).
16. Closure system according to Claims 14 and 15, characterised in that the slide element (9) and the spacer element s (8) are designed as single-piece components.
17. Closure system, especially for building equipment, consisting of a lock cylinder and a key, which can be introduced into the lock cylinder from one side, with keybit elements pointing in the direction of introduction, in which situation a lock plug is mounted in a housing so as to be rotatable, which features at least one engagement element, capable of being displaced against a spring force in the direction of introduction of the key, with an engagement cutout in which the engagement nose of a blocking element can engage when it reaches the coded position of the engagement elements, characterised in that an opening/closing bar (90) is arranged on the other side (8) of the lock cylinder, which, on actuation, engages with allocated contact surfaces (46b) of the engagement elements (3', 4'), in which situation the distance between these contact surfaces (46b) and the engagement cutouts (41) for the engagement nose (51) of the blocking element (5) is of equal size for all the engagement elements (3', 4'), and that, in the contact position of the opening/closing bar (90), the engagement cutouts (41) of all the engagement elements (3', 4') are in the engagement position in relation to the engagement nose (51).
18. Closure system according to Claim 17, characterised in that the opening/closing bar (90) is securely integrated in the cylinder lock, in which case the closure system can be actuated by drawing the opening/closing bar (90) into its contact position on the housing side and then rotating.
19. Closure system according to Claims 1 and 17, characterised in that the rider (4) features a projection (4a) in the direction of the second open side (B), in the side of which, turned away from the teeth (40), a cutout (430) with a contact surface (43a) for the contact element (7), as well as a cutout (45) with a contact surface (46b) for the web (95) of the opening/closing bar (90).
20. Closure system according to Claims 17 and 19, characterised in that the cutout (45) features at least such a width which corresponds to the total of the width of the web (95) resting in this cutout (45) and of the maximum displacement path of the carrier (3) and rider (4) in relation to one another, in which situation the web (95) is essentially in contact with its contact surface (96a) in the non-coded zero position with the contact surface (46a) of the cutout (45).
21. Closure system according to at least one of the foregoing Claims, characterised in that all the engagement elements, and carriers (3, 3') and riders (4, 4') respectively, of a closure system have an identical structural design.
22. Closure system according to at least one of Claims 1 to 21, characterised in that the closure system features a freewheeling device, that for this purpose the lock plug (115) and a lock gudgeon (116) of the lock associated with the closure system are capable of being connected by means of an axially displaceable carrier ring (117), that the blocking element (114) in the closed position of the closure system (110) engages in a corresponding cutout (113) of an interior cylinder (111), mounted so as to be capable of rotation in the housing (112) of the closure system, and that the interior cylinder (111) is provided on the carrier side with notches (121) or nose-shaped projections, which are connected to corresponding projections (122) or notches of a coupling ring (123) which is coupled to the carrier ring (117), with the result that, on rotation of the interior cylinder (111), the coupling ring (123) presses the carrier ring (117) into the lock until the lock plug (115) is no longer engaged with the carrier ring (117).
23. Closure system according to one of Claims 1 to 22, characterised in that above or below the engagement elements located in the lock plug (2), consisting of carriers (3) and riders (4), sufficient space remains for the closure system also to be capable of use with a reversing key.

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