DE4330478C1 - Cable lock, especially for two-wheel vehicles - Google Patents

Abstract

In a combination lock, especially for bicycles, with a bearing projection, with a locking part displaceable in the bearing projection, with a plurality of tumbler rings mounted rotatably in the bearing projection, with locking bits formed on the locking part and with locking-bit passage orifices on each tumbler ring, the combination lock having a device for the rotational blocking of the tumbler rings in their possible rotary detent positions during a displacement of the locking part out of the locking position into a manipulation position, it is proposed that the tumbler rings have radial recesses on an inner circumferential surface at points assigned in each case to the possible rotary detent positions, that the locking part be provided with noses which are matched to the shape of the recesses, precede the respective locking bits in the axial direction and project beyond the circumference of the bearing projection and which, in a rotary detent position of the respective tumbler ring, are out of engagement with the respective recess, when the locking part is in the locking position, and are in engagement with the respective recess, the said engagement blocking the rotation of the respective tumbler pin, when the locking part is in the manipulation position. This results in a particularly compact construction. <IMAGE>

Description

The invention relates to a combination lock, in particular for Bicycles comprising a lock housing with a substantially Chen cylindrical, longitudinally slotted bearing projection, an in Storage lead between a release position and a Closing position, sliding closing along the cylinder axis part, several axially arranged one behind the other on the bearing projection locking rings rotatably mounted around the cylinder axis, Beards formed on the closing part, which extend over the circumference protrude the bearing protrusion substantially radially on each Locking ring each has a lock bit passage opening, which in one corresponds to the locking secret of the combination lock appropriate release rotary position of the respective tumbler ring with the Lockbears aligned and thus a shift of the lock partially from the closed position to the release position, while in locking position deviating from the locking secret gene of the respective tumbler this a shift of Locking part from the closed position to the release position prevented by hitting one of the locking bars, a device for releasably locking the tumbler rings in their release and locking rotary positions with one each Latch spring supporting the bearing projection for each tumbler ring, the one locking projection against one with the rotary positions Assigned locking recesses provided locking inner peripheral surface of the respective tumbler ring biased radially outwards.

A combination lock with the specified device for releasable latching of the tumbler rings is known (DE 86 17 170 U1). The space-saving inside the tumbler rings orderly locking device is here from a into a longitudinal groove of the ledge formed with formed axially arranged one behind the other, assigned to the tumbler rings Latching elements made of helical compression spring and latching head. It results However, a multi-part structure of partly quite subtle Share, with correspondingly difficult assembly.  

A combination lock is known from DE 34 10 047 C2 on a plastic block molded latch tongue springs, which in Engage the notches on the outer circumference of the locking rings. Of the Plastic block requires additional installation space; also can this locking device (especially its locking notches) easily pollute.

To solve the problem, for a compact combination closed a simply constructed and of the type mentioned easy to assemble locking device will provide proposed that the detent spring is formed by a spring clip is that the bearing projection in the circumferential direction at least partially reaches around at a distance and with both ends of the bracket on the bearing projection is set that the locking projection on the Rastfe which is formed and that the locking inner peripheral surface of an inner polygonal surface is formed.

The detent spring designed as a spring clip already carries the Locking projection, so that the locking device from a single Part exists per tumbler ring. The detent spring is relatively large and therefore easy to handle, since it encompasses the bearing projection. There is a distance at least in the area of the locking projections between detent spring and bearing protrusion to a radial on to allow springs. The detent spring needs ledi for assembly resembled over the ledge and with both ends on Warehouse lead can be set. It is enough in all Rule when the temple ends only in the corresponding holding hole of the bearing protrusion, in which they are then due to which the two temple ends try to compress the bias of the detent spring remain independently. A Moving out of the holding openings is also prevented changes that the assembled inner circumference of the catch surface a larger deflection of the temple ends radially outwards excludes from the holding openings. In addition to the particularly one fold shape of the inside forming the latching inner peripheral surface polygonal surface with corresponding manufacturing advantages an ergonomically favorable locking behavior, namely with one wide catch area on both sides of the respective resting position. Go  one, for example, from a rotational position in which the Locking head arranged in the middle of the length of the respective polygonal surface net, and then you twist the tumbler in one or other direction, so the rotary motion is increasingly by the detent spring supports as the detent head against an increasing presses the more inclined surface like a wedge. Still that is Resting position well defined and is reliably observed. Unscrewing the respective tumbler from the locking position tion does not require overcoming a particularly high start powers.

It is particularly preferably provided that the detent spring with two preferably diametrically opposite one another is formed locking projections. So you get in ver amazingly simple two latches per tumbler ring. By placing them diametrically opposite one another, there is an automatic self-centering of the rings ease of use.

The detent spring is preferably made of plastic, preferably one elastomeric acetal resin. Such material has the required long-term spring elasticity on portable materials costs.

It is advantageous if the inner circumferential locking surface of a 6- Edge surface is formed, with the individual surfaces preferred are slightly arched outwards, and if the little least a locking projection of a preferably rounded Snap head is formed.

The locking device according to the invention can be particularly Combine the advantage with a device for blocking rotation.

A lock with a device for rotating the lock teringe in their possible locked rotary positions at one Movement of the locking part from the closed position to one Scanning position is known (DE 86 17 170 U1). The facility to prevent the locking rings from rotating, an unauthorized person  Difficulty opening the combination lock. Because namely for the scanning of the locking secret, the locking part insignificantly gig from the closed position to a scanning position on the one or the other side of the closed position, with the goal, by carefully turning the on the locking beards more or less tightly fitting tumbler rings the respective To feel the lockbeard passage opening, this was Attempt to stop immediately by the said device tion in the scanning position of the closing part, the rotation of the Locking rings blocked. For this purpose, the tumbler rings are on your respective radial end face at the possible locking rotation positions assigned to each with axial recesses gene provided, the outline of which is adapted to the lockbeard outline, so that in the scanning position the respective lock bit on Bottom of the recess and the rotation of the tumbler blocked. The disadvantage of this arrangement is that this Ver the effective wall thickness of the respective tumbler ring reduce so that to ensure adequate burglary security of the combination lock the axial wall thickness of the respective tumbler ring is to be increased accordingly. Ent the additional is added according to the number of tumbler rings axial space requirement. Since it is in the preferred application form, namely bicycle combination lock, to inexpensive Manufacturability, low overall weight and compact design arrives, you will generally only get a reduced number of Use tumbler rings (in the embodiment according to DE 86 17 170 U1 there are three tumbler rings), but among them the Burglar security suffers because the number of possible different combinations decreases.

To provide a combination lock, which is axially particular builds short, so that the possibility of increasing the number the tumbler exists, it is proposed that the tumblers rings on an inner circumferential surface at the possible locking rotation positions assigned to respective radial recesses have that the closing part with the shape of the recesses adapted, the respective locking mustards in the axial direction upstream, above the scope of the storage projection  Lugs is provided, which is in a locked rotary position of the jewei left tumbler ring out of engagement with the respective recess are when the locking part is in the closed position det, and block in the rotation of the respective tumbler the engagement with the respective recess if the Locking part is in the scanning position. According to the invention serve the lugs and the recesses assigned to them finally the rotation lock in the scanning position of the Striker. The stop function to prevent one Displacement beyond the scanning position, especially in the release position, as with conventional comm binary locks without a device for rotating blocking, the the respective, essentially flat, radial end face terings on which the respective lock bit in the scanning position is present, i.e. in an unimpaired area of the tumbler ring.

You get a particularly simple and therefore inexpensive producible shape of the tumbler if the recesses on the respective tumbler rings are axially continuous.

The preferred one contributes to the desired compactness of the arrangement Measure in that the recesses in a rotary bearing on Storage projection provided storage area of the respective tumbler are trained around. The storage space to be provided anyway therefore has a double function according to the invention. A separate, the axial length, in turn, increasing the ring area for provision the recesses are therefore not necessary.

It is particularly preferred that the bearing surface from an inner polygonal surface, preferably a hexagonal surface, is formed, and that the lugs for engagement in the respective Inner polygonal corner is essentially gabled are. This gives you both a fully satisfactory Warehouse function due to the well-defined layout of the warehouse surface on the cylindrical outer circumference of the bearing projection in each case in the area of the center of length of the individual polygonal surfaces. Also is due to the respective engagement of the nose in the inside edge corner reliable locking of the tumbler ring  given. The polygonal shape is easy to produce in terms of production technology. The one Attempt to turn the blocked tumbler forces are directly in the bearing projection on the bearing surface initiated. A hexagonal surface is particularly preferred since this with the usual radial dimensions of bearing protrusion and tumbler on the one hand for a sufficiently large nose cross cut and thus ensures high security against rotation, and others with six possible rotary positions are sufficient high number of possible combinations, preferably four Tumbler rings offers.

It is also proposed that the bearing surface Inner polygonal surface opposite the locking inner peripheral surface inner polygonal surface is offset by an angle α, which is 180 ° / n, where n is the number of edges and both an inner polygonal surface as well as the other inner polygon area is. Because of the angular displacement, the detent spring with the two diametrically opposite rest stops jumps symmetrically to the bearing projection with the lock bit be ordered, so with the holding openings for the temple ends on the bearing protrusion on both sides of the locking part. The detent spring then engages around the side of the bearing facing away from the locking part ledge. The two locking projections are also sym metric to the locking part.

In the combination lock according to the invention, in particular for a bicycle, a variety of designs are conceivable at for example that of a cable lock, with the cable end attached directly to the lock housing and the other cable loin is provided with the closing part, which is in the closing position in the lock housing is fixed, and in the release position are completely pulled out of the lock housing can. However, it is preferably provided that the closing part in Lock housing only between the release position and the closed position is movable that the combination lock is provided with a connection part, with a connection head, which can be inserted into an opening in the lock case, there lockable in the closed position by means of the closing part  and in the release position of the closing part from the opening is removable again.

The locking part is therefore permanently in the lock housing builds, with the advantage of greater mechanical robustness of the Castle. So the axis of the opening for the connection head be arranged perpendicular to the axis of movement of the closing part, making an attempt to force the connector head out of the opening pull out, not to burden the actual Combination lock, namely the mustaches and tumbler guided. By appropriate dimensioning and storage of the Locking part can be very robust against such pull-out be designed. Another advantage is that the locking part permanently stored in the lock housing from the outside is much less manipulable than the connector head, so that it also makes scanning attempts more difficult in principle become.

The connecting part is preferably a bracket or a cable, wherein in the latter case, the connection head at one end of the cable is seen and the other end of the cable directly at the castle housing is attached.

In order for a pleasing exterior of the combination lock worry, it is proposed that the lock housing two the Bearing protrusion enveloping housing shells, preferably made of Plastic. These shells are inexpensive to manufacture len and assemble and offer some protection of the inner lock parts from dirt.

The invention is in the following on a preferred embodiment Example explained using the drawing.

It shows:

Figure 1 is a side view of the combination lock designed as a cable lock.

FIG. 2 shows an end view of the cable lock according to FIG. 1 (arrow II in FIG. 1);

Fig. 3 is a sectional view of the cable lock ge according to Figures 1 and 2 along line III-III in Fig. 2.

Fig. 4 is a sectional view of the cable lock ge according to Figures 1 and 2 along line IV-IV in Figures 1 and 2.

Fig. 4A shows the detail A in Figure 4, but with laterally displaced in a sensing position closing part.

Fig. 5 is a section along line VV in Figures 3 and 4.

Fig. 6 is a section along line VI-VI in FIGS. 3 and 4;

Fig. 7 is a section along line VII-VII in Fig. 4A;

Fig. 8 is a section along line VIII-VIII in Fig. 4A;

Fig. 9 is a plan view of the closure member;

Fig. 10 is a section along line XX in Fig. 9 and

Fig. 11 shows a section according to line XI-XI in Fig. 9.

In the embodiment to be described below Combination lock according to the invention is a Cable lock for a bicycle, even if other types of lock like above are conceivable, such as. B. padlock, Padlock or chain lock. In all of these cases  the corresponding connector within the combination lock housing be locked.

In the combination lock 10 shown , the connection is part, as I said, a cable 12th A cable end 12 a is fixed to the actual lock 14 . The other cable end 12 b can optionally be inserted into a blind hole opening 16 of the lock 14 and shut off there by means of a closing part 18 . For this purpose, a total of four tumbler rings 20 a - 20 d, which release the locking part 18 in a rotational position corresponding to the locking secret, so that the locking part 18 against the force of a bias spring 22 from its closed position shown in FIGS. 1, 3 and 4 to the right in a clearance order can be moved, which is only indicated in FIGS . 3 and 4 with a dash-dot outline. In this release position, a mushroom-like shaped end piece can be pulled out of the aperture 16 24, whereas in the closed position of the closing part 18, a right in the figures, peripheral portion 26 a of a holding hole 26 in the closing part 18 the mushroom head 24 a locking engages behind. A lateral evasion of the mushroom head 24 a is not possible in this position, since the mushroom head 24 a is fitted into a blind hole opening 28 of the lock 14 (see FIG. 3). The edge section 26 a is chamfered downwards and outwards, in order to adapt to the shape of the correspondingly conical mushroom foot 24 b of the end piece 24 .

In order to facilitate the handling of the cable end 12 b, it is provided with a spherical thickening 30 from which the end piece 24 protrudes.

The other cable end 12 a is permanently connected to the lock 14 , in particular by gluing, pressing or welding a cable core 12 c into an insertion opening 32 of a central lock part 34 . In the lock part 34 , the slide-like locking part 18 already mentioned can also be moved back and forth along an axis 36 between the two positions mentioned - the closed position and the release position. The central locking part 34 , preferably made of metal, is largely coated as protection and to improve the appearance and handling by two housing shells 38 and 40 , which are preferably made of plastic in order to provide an attractive exterior with low weight and corrosion resistance recognizes in particular in FIGS. 1, 2 and 3 a lower housing shell 38 and an upper housing shell 40 clipped or welded thereto. For the exterior, it should also be added that the slide-like closing part 18 is provided at its left end in FIGS. 1, 3 and 4, which is led out of the upper housing shell 40 , with a plastic cap 42 , which provides a certain seal to the housing shell 40 , to protect the interior of the castle 14 . In addition, the cap also reduces any risk of injury at the outwardly projecting end of the closing part 18 made of metal. The plastic cap 42 can also increase the security of scanning, since it at least impedes the forwarding of fine movements of the closing part 18 during a possible scanning attempt to the hand pressing against the plastic cap 42 due to its spring and damping properties. To prevent loosening of the plastic cap 42 of the closing part 18, a locking connection of laterally projecting latch hook 18a of the locking part and assigned to these recesses 42 a provided in the plastic cap 42 between the two parts.

The closing part 18 is locked in its in FIGS . 3 and 4 Darge closed position by the four tumbler rings 20 a- 20 d already mentioned, provided that they are rotated into a locking rotation position different from the locking secret. To this end, the tumbler rings each cooperate with a locking bit 44 a- 44 d. These locking ridges 44 are formed on the locking part 18 . You are radially over the circumference 46 a of a cylin drical bearing projection 46 , which forms a portion of the central lock part 34 . The locking part 18 is otherwise inserted into a longitudinal slot 47 of the locking part 34 , which accordingly also extends into the bearing projection 46 .

The structure of the Zuhalteringe 20 a- 20 d apparent in particular from Fig. 5-8 forth. An inner ring part 48 , preferably made of a molded metal part, and an outer ring part 50 can be seen . Last teres is pushed onto an outer circumferential surface 48 a of the inner ring part 48 , wherein the outer circumferential surface 48 a can be provided with a radially outwardly projecting circumferential rib 48 b for mutual fixation. The outer ring part 50 consists in particular of plastic and bears characters, in particular numbers, assigned to the individual rotational positions, as indicated in FIG. 1.

The axis of the cylindrical bearing projection 46 coincides with the already mentioned axis 36 of the closing part 18 . The inner ring parts 48 are therefore rotatably mounted concentrically to the axis 36 on the bearing projection 46 . The bearing surface on the ring side is formed here by an inner polygonal surface in the form of a hexagonal surface 52 , which consequently has a total of six locations, namely in the region of the center of length L of the respective polygonal surface. In FIGS. 3 and 4, to the left of the bearing surface (6-edge face 52) forming axial portion 54 of the inner ring portion 48, followed by a further axial portion 56 which is also provided with an inner polygonal surface in the form of a 6- edge surface 58. The length of the polygonal surfaces is comparatively larger so that an annular space 60 between surface 58 and 6- Kant circumference 46 a of the supporting projection 46 is formed which serves to receive a detent spring 62nd

This detent spring 62 consists of a plastic bow spring, preferably of an elastomeric acetal resin. The two temple ends 62 a are provided with an inwardly projecting nose 64 which are inserted into a correspondingly adapted holding opening 66 in the circumference 46 a of the bearing projection 46 . A white-going fixation of the temple ends 62 a is not necessary, since the detent spring 62 assumes the starting position shown in FIG. 5, possibly under spring tension in the sense of an approximation of the two temple ends 62 a. The two holding openings 66 are in the desired axial position, which is assigned to the respective locking ring 20 a - 20 d. Between the two bracket ends 62 a, the closing part 18 extends with its over the circumference 46 a of the bearing protrusion 46 in front of standing locking mustards 44 . The detent spring 62 encompasses the bearing projection 46 for the most part, whereby it can rest on the circumference 46 a in the area of its lengths M, ie opposite the locking ridges 44 , whereas they are otherwise, ie in FIG. 5 above and below, clear distance to the circumference 46 a, so that there is the possibility that the detent spring 62 deflects radially inwards: at point S which is rotated exactly 90 ° upwards or downwards relative to the center of length M, the detent spring 62 is also logically provided with a rounded detent projection 68 , which engages in the polygon corner there to lock the respective rotational position of the tumbler 20 .

It can be seen that with a rotation of the respective Zuhal terings 20 in one direction or the other from the locking position shown in Fig. 5, the two locking projections 68 are increasingly pressed inwards until the ring reaches an intermediate position between successive locking positions (in Case of the hexagon after a rotation of 30 °). Here, a certain torque must be applied, which drops from a maximum value in the rest position to zero in the middle position. If the tumbler ring is rotated further in one direction or the other from this semi-stable position, this rotation is increasingly supported by the force of the catch spring 62 springing outwards so that the next catch position is reliably reached without the operator having to take greater care is.

A corresponding spring characteristic can be obtained by appropriately designing the detent spring in order to set a desired torque curve. For the same purpose, the individual surfaces of the hexagonal surface 58 can also be curved inwards or outwards, preferably outwards with a radius of curvature R which corresponds to approximately two to five times, preferably approximately three times the distance of a polygonal corner from the axis 36 .

FIGS. 5 and 6 it can be seen that the 6-edge face 58 opposite the 6-edge face 52 at an angle α of 30 ° is set ver. The reason for this is that one of the 6 vertices of the 6-Kant 52 in height of the should lie in the figures from left to right extending closing part 18 in the respective locking position, whereas, due to the sym for shooting part 18 metric arrangement of the latching spring 62, the locking heads 68 must be in the upper or lower position.

Each tumbler ring 20 is provided with a lock bit passage opening 70 . Corresponding to the rectangular cross section of the mustaches 44 , the passage opening 70 is also rectangular. It is located in the area of one of the six polygon corners.

In the rotational position corresponding to the locking secret of the respective locking ring, the lock bit passage opening 70 is aligned with the corresponding lock bit, as indicated in FIG. 8 using the example of the locking ring 20 c (see also FIG. 4A). If all the tumbler rings are in their rotary position corresponding to the locking secret, then all the mustaches 44 are aligned with all of the passage openings 70 . The closing member can thus in Figs. 3 and 4 are moved against the force of the spring 22 by being pressed at its left end to the right into its release position with the possibility of the end piece 24 of the cable insert or 12 into the buckle 14 be pulled out of this. The insertion can also take place without pressing on the closing part 18 , since the chamfering of the section 26 a of the edge of the holding opening 26 serves as a guide surface.

If, on the other hand, at least one of the tumbler rings 20 is rotated from its release-rotational position corresponding to the locking secret, the respectively assigned locking bit strikes a flat, radially oriented end face 72 of the respective tumbler ring 20 , and indeed after a relatively short displacement in a position referred to as the scanning position of the closing part 18 (see FIG. 4A). The end face 72 connects the hexagonal surface 52 serving as a bearing surface with the hexagonal surface 58 serving as a latching surface for the latching spring 62 .

As soon as the closing part 18 is moved from its closed position in the direction of the release position, but before reaching the scanning position, a nose 74 in front of the respective locking bit immediately penetrates into the area of the respective inner polygonal corner E of the smaller hexagonal surface 52 , provided that the corresponding one Locking ring 20 is not in its release rotary position, but one of its 5 remaining locked rotary positions, the locked rotary positions. This is clear from the section in FIG. 7. The nose 74 is adapted to the shape of the corner area, ie essentially in the form of a gable roof. Accordingly, the gable roof angle β is 120 ° (see FIG. 11). Due to this positive engagement in the area of the inner polygon corner E, the respective nose 74 blocks rotation of the respective tumbler ring 20 . Such a rotation is often made in the event of unauthorized scanning of the locking mechanism, since one can sense the position of the lockbeard-through opening in the said scanning position with more or less pressed beard rings on the tumbler rings.

Assembling the combination lock is easy. The locking part 18 is inserted into the central locking part 34 after the preload spring 20 has been inserted and fixed with the aid of a pin 76 which can be seen in FIG. 3. This pin penetrates an elongated hole 78 of the closing part, the pin 76 striking one of the two elongated hole ends in the closed position and the other elongated hole end in the release position.

The tumbler rings 20 are then threaded onto the bearing projection 46 one after the other. Here, the associated detent spring 62 is first snapped until the clip ends 62 a snap into the holding openings 66 . Then the inner ring part 48 preassembled with the outer ring part 50 is pushed on, etc. After pushing on the last tumbler ring, an end ring 80 is pushed on and fixed to the bearing projection 46 with the aid of a pin 82 . Then the cable end 12 a on the lock part 34 is fixed bend. Then the two housing shells 38 and 40 can be attached.

One obtains a largely secure against scanning attempts Combination lock with simple, compact structure and easier to assemble. In particular the assembly of the Rastein direction in the form of the detent springs is particularly designed fold, because the springs are easy to handle due to their size and, snapped onto the bearing projection, also for a correct one Adjust the position of the tumbler ring that is then attached to care. After all, the locking device is only a little sensitive to dirt, so that it is reliable even under rough conditions Function is guaranteed.

Claims (12)

1. Combination lock, especially for bicycles, comprehensive

• - A lock housing with a substantially cylindrical, longitudinally slotted bearing projection. ( 46 ),
• - A in the bearing projection ( 46 ) between a release position and a closed position along the cylinder axis ( 36 ) displaceable closing part ( 18 ),
• a plurality of tumbler rings ( 20 ) arranged axially one behind the other on the bearing projection ( 46 ) and rotatably mounted about the cylinder axis ( 36 ),
• - On the locking part ( 18 ) trained locking ridges ( 44 ) which project radially over the circumference ( 46 a) of the bearing projection ( 46 ) substantially,
• - On each tumbler ring ( 20 ) each have a lock bit passage opening ( 70 ), which in a lock's secret of the combination lock corresponding release-rotary position of the respective tumbler ring ( 20 ) is aligned with the locking straps ( 44 ) and thus a displacement of the locking part ( 18 ) from the closed position to the release position, while in the locking position deviating from the locking secret of the respective tumbler ring ( 20 ) this a displacement of the locking part ( 18 ) from the closed position into the release position by a stop at one of the locking bars ( 44 ) prevents
• - A device for releasably latching the tumbler rings ( 20 ) in their release and locking rotary positions, each with a bearing on the bearing projection ( 46 ) supporting detent spring ( 62 ) for each tumbler ring ( 20 ), which has a latching projection ( 68 ) against one internal locking peripheral surface ( 58 ) of the respective tumbler ring ( 20 ) provided with locking recesses assigned to the rotational positions, prestressed radially outwards,
  characterized in that the detent spring ( 62 ) is formed by a spring clip, which at least partially encompasses the bearing projection ( 46 ) in the circumferential direction at a distance and is fixed to the bearing projection ( 46 ) with both clip ends ( 62 a) such that the latching projection ( 68 ) is formed on the detent spring ( 62 ) and that the detent inner peripheral surface is formed by an inner polygonal surface ( 58 ).

2. Combination lock according to claim 1, characterized in that the detent spring ( 62 ) is formed with two mutually preferably substantially diametrically opposite locking projections ( 68 ). 3. Combination lock according to claim 1 or 2, characterized in that the detent spring ( 62 ) is made of plastic, preferably of an elastomeric acetal resin. 4. Combination lock according to one of claims 1 to 3, characterized in that the latching inner peripheral surface is formed by a hexagonal surface ( 58 ), the individual surfaces are preferably slightly curved outwards, and that the at least one latching projection of one preferably abge rounded locking head ( 68 ) is formed. 5. Combination lock according to one of the preceding claims, further comprising:
A device for rotationally blocking the tumbler rings ( 20 ) in their possible blocking rotational positions when the locking part ( 18 ) is moved from the locking position into a scanning position, characterized in that
that the tumbler rings ( 20 ) have radial recesses on the inner circumferential surface at the positions assigned to the possible blocking rotary positions,
that the closing part ( 18 ) is provided with lugs ( 74 ) which are adapted to the shape of the recesses and which precede the respective locking rams ( 44 ) in the axial direction and project over the circumference of the bearing projection and which are in a locked rotational position of the respective locking ring ( 20 ) except a handle with the respective recess when the closing part ( 18 ) is in the closed position, and in the rotation of the respective tumbler ring ( 20 ) blocking engagement with the respective recess when the closing part ( 18 ) is in the scanning position . 6. Combination lock according to claim 5, characterized in that the recesses on the respective tumbler rings ( 20 ) are axially continuous. 7. Combination lock according to claim 5 or 6, characterized in that the recesses are formed in a for the rotary bearing on the Lagervor jump ( 46 ) provided bearing surface of the respective Zuhal terings ( 20 ). 8. Combination lock according to claim 7, characterized in that the bearing surface of an inner polygonal surface, preferably hexagonal surface ( 52 ), is formed, and that the lugs ( 74 ) are designed to engage in the respective inner polygonal corner (E) substantially gable roof-shaped . 9. Combination lock according to claim 4 and 8, characterized, that the inner polygonal surface forming the bearing surface against above the inner surface forming the latching inner peripheral surface edge surface is offset by an angle α, which is 180 ° / n , where n is the number of edges of both Inner polygonal surface as well as the other inner polygon area is. 10. Combination lock according to one of the preceding claims, characterized in that the locking part ( 18 ) in the lock housing is only movably supported between the release position and the closed position, and that the combination lock is provided with a connecting part with a connecting head which is in an opening ( 16 ) of the lock housing, can be locked there by means of the locking part ( 18 ) in its closed position and can be removed again from the opening ( 16 ) in the release position of the locking part ( 18 ). 11. Combination lock according to claim 10, characterized in that the connecting part is a bracket or cable ( 12 ). 12. Combination lock according to one of the preceding claims, characterized in that the lock housing two, the bearing projection ( 46 ) comprises an enveloping housing shells ( 38 , 40 ), preferably made of plastic.