DE20118686U1 - Bicycle lock with number lock device - Google Patents

Description

ZELIMIR DUGI D-60489 FRANKFURT

Bicycle lock with combination lock

The present invention relates generally to a bicycle lock with a special number combination lock for locking the bicycle lock and in particular to the locking device for a U-lock.

Nowadays it is common knowledge and widespread to secure two-wheelers, especially bicycles, against theft with an additional lock. Three groups of locking designs are used. In detail, a distinction must be made between U-locks, loop locks and spiral locks. U-locks are generally a U-shaped metal shackle that is locked at both ends of the U-shackle by a transverse locking device. Locks are used here that are locked with a key. In addition, loop locks and spiral locks also usually have a locking mechanism with a combination lock. The problem with combination locks is that you can easily feel which numbers open the lock by pulling on the locking mechanism. U-locks also generally have a weight problem because the shackle is made of solid metal and has a limited locking radius.

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The invention is based on the task of constructing a bicycle lock with a combination locking mechanism that does not allow any conclusions to be drawn about the combination from the outside. Furthermore, the construction of this mechanism should be adapted for a bicycle U-lock with weight-reducing elements and an extended locking radius.

This task is solved by installing a spring in a bicycle lock with a combination lock mechanism, which unlocks the lock without any external influence and the locking elements always have the same distance from the locking elements.

The advantage is that the lock mechanism is designed in such a way that it is possible to lock several locking points at the same time. 15

It is advantageous that a locking device can lock several different types of locking brackets or steel cables (e.g. U-lock and loop lock at the same time).

A further advantage is that the locking mechanism is designed as a transverse locking device to the locking part, so that no direct conclusions can be drawn about the number combination via the locking part.

A further advantage is that the device of a locking mechanism has several number locking bars.

It is advantageous that the locking bars and the transverse locking device are always the same distance from each other, so that one combination locking bar cannot be locked before the others.

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Another advantage is that you can assign your own locking number to a locking bar.

Another advantage is that the bracket is made of steel tube, which reduces the weight.

A further advantage is that the U-shaped steel tube has a filling made of light but pressure-resistant material, which stiffens the tube.

A further advantage is that the bracket consists of several bracket elements that can be pushed into each other (car antenna principle) or pushed in next to each other to allow a larger protection radius when pulled out.

The invention relates to a bicycle lock according to one of claims 1 to 21. Such a bicycle lock can be used both on its own and with a large number of commercially available bicycles and locking devices.

The invention is described in more detail below using preferred embodiments in conjunction with the drawing. Herein:

Fig. 1 - Section through a U-lock with

Number locking mechanism

Fig. 2 - Section through Fig.l rotated by 90 degrees

Fig. 3 - Enlargement of the number locking mechanism of Fig. 2

Fig. 4 - Section through extension leg of a U-lock with

Alternatives a, b, c

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Fig. 1 to Fig. 4:

Identical elements or identical functions are designated by identical reference numbers in Fig. 1 to Fig. 4.

Fig. 1 shows a cross section through the locking cylinder (11) of a

U-lock (19) in the open state. Rectangular or polygonal cross-sections, solid or with a tubular character are also conceivable. The end cover (18) with a spring element (16) is attached to the left end of the lock housing (11). The locking element (12) is designed as a metal tab, which has a circular end plate (15) at the left end, which tensions the spring (16) when the lock is closed via the locking device (12a) (shown here relaxed = open). Tubular (cylinder or rectangular) locking elements or combinations thereof with tabs are also conceivable. The spring is guided in a cylinder piece, which has a projection at the end as an end support for the end plate (15). The locking element (12) has at least one recess (13) which has an opening on one side, which allows a locking anchor (20) to be pulled through. The other side of the recess (13) is designed in such a way that it locks the locking anchor (20) of the lock bracket (10) in the locked state. Of course, other elements provided with locking anchors (20), such as steel cables or chains, can be used instead of the lock bracket (10), or combinations of these parts (e.g. one side of the lock bracket (10), other side of the steel cable) or the application to known loop lock constructions, which are firmly connected to the locking mechanism housing (1) on the one hand and the other side is locked via a locking anchor. A locking end instead of the locking anchor (20) is also conceivable, which has a hole in the locking part (20) (tab or cylinder) through which a

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(12) is inserted. The locking element (12) is mounted in a guide groove (14) which on the one hand fixes the sliding in one plane and on the other hand holds the tab in the cylinder so that the lock anchor (20) cannot be pulled out. The guide groove (14) can be designed as an elongated groove or tab-like projection. The combination lock mechanism is described in more detail in Fig. 3.

Fig. 2 shows a longitudinal section through the lock housing (11) of a

U-lock (19) in the closed state. The locking device (12a) is pushed in and the spring (16) is compressed and thus tensioned. The reverse design as a tension spring and also arranged in a different place is also conceivable. The lock housing (11) has recesses in the cylinder jacket which lie above the recesses in the locking element (12) and enable the lock anchor (20) to be inserted. This contains two insertion openings on each side so that two lock shackle (10) (or steel cable or chain) can be locked to the locking cylinder at the same time.

Fig. 3 shows an enlarged section through the combination lock

mechanism of the locking cylinder (11). Two locking elements are used here. The first one is well known on the market and works with several (normally 3-4) number rings (2), which have a recess (4) in a ring section on the underside, which allows a tooth-like tab (12b) to be pulled through (only in one position) or locked (all other positions). The tooth-like tab is firmly connected to the locking element (12). The number rings (2) are rotatably mounted on a lock housing (11) via guide rings. The lock housing (11) has an elongated opening at this point, in which the tooth-like tab (12b) can be moved at the height of the teeth (5) by the closing distance (21). The teeth (5) of the tab (12b) in the recess (4) move by the closing distance (21) and the lock is unlocked, otherwise it is locked.

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However, other combination lock mechanisms known on the market can also be used in conjunction with the locking element (12). The second combination lock mechanism is embedded in the end of the lock housing (11) and is attached to the lock housing (11) using the locking mechanism housing (1). This in turn consists of cylinders (3) which, in one position on the side of the tab (12b), have an elongated rectangular cutout (6) (=>from the final distance (21)) so that the tab (12b) can be pushed in. If all the cylinder rings (3) are placed in the same position with the recess (6), the tab (12b) can be pushed in and the lock is open; otherwise it remains locked. The cylinder rings (3) are secured against being pushed in by the lock housing (11). The cylinder rings (3) cannot be pulled out by locks (7) in the locking mechanism housing (1) and the locks (7) on the cylinder rings (3), which engage like teeth. Both combination lock mechanisms have a number ring (9) or plate (9a) with numbers written on it (e.g. 0-9 with intermediate dots), which can be plugged onto the cylinder rings (3) (2) so that you can set your own number combination. These can only be changed when the lock is open. The element (22) and element (22a) ensure that the number combination cannot be changed. The element (22) is a nipple or tab with a spring bearing in the locking mechanism housing (1), which can be pushed down when the lock is open so that the number rings can be pulled off one after the other and put back on in a different position. The element (22a) is simply a ring-like widening of the locking element (12a), which means that the number plates (9a) cannot be adjusted when the lock is locked. Otherwise, the locking rings (2) and locking cylinders (3) are interlocked in such a way that pulling them out is not possible, but they can be easily rotated around the central axis. The locking rings (2) have notches on one side distributed at the same distance across the locking rings (2) and on the other side a spring-loaded nipple (24), which has a slight locking function when the

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locking ring (2). The same function is performed by a point-like elevation (24a) evenly distributed at the end of the locking cylinder (3). Here, the spring (16) of the locking element (12) is also used to create the engagement point. Both elements have the task of enabling precise adjustment of the opening state, since their positions are synchronized with the opening position. The guide channel (28) is let into the opening in the lock housing (11) (welded, screwed, clamped, etc.) and is made of plastic and/or metal (guide for the anchor (20) and water protection). The variant with the locking cylinder lock can also be used as a locking mechanism for well-known disc brake and spoke locks for motorcycles and bicycles.

Fig. 4 Shows three alternative leg extension elements (26) of a

U-lock (10). The first leg extension element (26a) is provided at the end with a ring-like element (27a) that holds the leg of the metal bracket (10) in a movable manner. The end of the metal bracket (10) is attached in the same way to the leg extension element (26a). The leg extension element (26b) is designed analogously to the principle of a car telescopic antenna. The fastening device is the tubular casing (10b) with a locking ring (27d) at the end and the end widening of the leg extension element (26b). The third variant consists of a hole in both parts at the end through which the parts (27c, 10c) are rotatably attached to one another via a rivet-like bolt. A spacer ring in between facilitates rotation. All variants can be equipped with several extension elements and also in the opposite order. The cross-sectional shape can be circular or rectangular. The elements (26, 10) can be arranged next to each other or one above the other, inside or outside, in any possible combination. Other connecting means known on the market can also be used analogously to the principle shown, as long as a firm connection (27) is ensured.

Claims (20)

1. Bicycle lock with number combination locking device ( 2 , 3 ) in the lock housing ( 1 , 11 ) with locking elements ( 12 ) for locking anchor-like and hook-like locking parts ( 20 ), characterized in that the locking element ( 12 ) is slidably mounted in a guide channel ( 14 ) so that the locking element ( 12 ) tensions or compresses a spring ( 16 ) during locking, which then unlocks when the number combination is correct in the open position ( 6 , 4 ). 2. Bicycle lock according to claim 1, characterized in that the locking rings ( 2 ) or locking cylinders ( 3 ) each have a slip-on element ( 9 , 9a ) with number division inscription, which, when the lock is opened, is adjustably connected to the locking element ( 2 , 3 ) in different positions analogous to the number division. 3. Bicycle lock according to claim 1, characterized in that the locking element ( 12 ) has at least one locking opening ( 13 ) which locks the locking part ( 20 ) in the closed state and enables the locking part ( 20 ) to be pulled out when the lock is open and is arranged in this state such that it lies on an axis with the opening ( 19 ) in the lock housing ( 11 ) and enables guided insertion via a guide channel ( 28 ) in the opening ( 19 ) in the lock housing ( 11 ). 4. Bicycle lock according to claim 1, characterized in that the closure part ( 20 ) is designed as a locking element ( 12 ). 5. Bicycle lock according to claim 1, characterized in that the locking element ( 12 ) has at least one locking tab ( 12b ) which is perpendicular to the longitudinal axis and which contains a toothing ( 5 ) on the upper side which fits into the recess in the lock housing ( 11 ) and into the recess ( 4 ) in the locking ring ( 2 ). 6. Bicycle lock according to claim 1, characterized in that the locking mechanism has at least one locking ring ( 2 ) and is provided with at least one support ring ( 23 ) which enables it to rotate in a guided manner about its own central axis and provides the free space for the locking teeth ( 5 ). 7. Bicycle lock according to claim 1, characterized in that the locking ring ( 2 ) has at least one slip-on ring ( 9 ) with numbered inscription, which enables the locking ring ( 2 ) to be rotated and is sealed by the locking element ( 22 ) when the lock is closed before it is removed from the locking ring ( 2 ). 8. Bicycle lock according to claim 1, characterized in that the locking element ( 12 ) has at least one locking tab ( 12b ) which is perpendicular to the longitudinal axis and has a vertical straight end on the outside. 9. Bicycle lock according to claim 1, characterized in that the locking element has at least one locking cylinder ( 3 ) which has a recess at a position in the cylinder jacket on the side of the locking tab ( 12b ) which enables the locking tab ( 12b ) to penetrate into the recess ( 6 ) - in the length - of the locking path ( 21 ). 10. Bicycle lock according to claim 1, characterized in that the locking cylinder ( 3 ) has at least one slip-on ring or slip-on plate ( 9a ) with numerical inscription, which enables the locking cylinder ( 3 ) to be rotated and is sealed by the locking element ( 22a ) when the lock is closed before it is removed from the locking cylinder ( 3 ). 11. Bicycle lock according to claim 1, characterized in that the locking cylinder ( 3 ) is toothed ( 7 ) with further locking cylinders ( 3 ) and the locking mechanism housing ( 1 ) in such a way that pulling out is not possible, but turning is not hindered. 12. Bicycle lock according to claim 1, characterized in that the locking ring ( 2 ) is interlocked with further locking rings ( 2 ) or support rings ( 23 ) and the locking mechanism housing ( 1 ) in such a way that pulling out is not possible, but turning is not hindered. 13. Bicycle lock according to claim 1, characterized in that the locking rings ( 2 ) and the locking cylinders ( 3 ) have dividing elements ( 24 , 24a ) which are evenly arranged over their circumference in 10 parts or multiples thereof and are held in a predetermined position by a spring ( 16 , 24 ). 14. Bicycle lock according to claim 1, characterized in that the bicycle lock has at least one solid metal bracket ( 10 ) with locking elements ( 20 ) at the ends. 15. Bicycle lock according to claim 1, characterized in that the bicycle lock has at least one metal bracket ( 10 ) with locking elements ( 20 ) at the ends, which is designed in the form of a tube and the tube has a light but pressure-resistant filling ( 25 ). 16. Bicycle lock according to claim 1, characterized in that the bicycle lock has at least one metal shackle ( 10 ) with extension elements ( 26 ) on the shackle legs ( 10 ), wherein extension elements ( 26 ) have locking elements ( 20 ) at the ends. 17. Bicycle lock according to claim 1, characterized in that the bicycle lock has at least one metal bracket ( 10 ) with extension elements ( 26 ) on the bracket legs ( 10 ), which can be pushed or folded into one another or next to one another and are connected to one another in a displaceable ( 27 a, 27 b) or rotatable ( 27 c) manner. 18. Bicycle lock according to claim 1, characterized in that the bicycle lock has at least one steel cable ( 10 ) with locking elements ( 20 ) at both ends. 19. Bicycle lock according to claim 1, characterized in that the bicycle lock has at least one steel cable ( 10 ) with a locking element ( 20 ) at one end and a fixed connection to the locking mechanism housing ( 1 ). 20. Bicycle lock according to claim 1, characterized in that the outer parts have a protective cover as a protective sheath.