The present invention relates to a device for locking a bicycle provided with a bicycle lock.

Bicycles are generally provided with a bicycle lock which is fixed on the bicycle and the locking element of which is adapted, in the locking position of the bicycle lock, to extend through one wheel of the bicycle, normally the rear wheel, to prevent rota¬ tion thereof and, hence, unauthorized use of the bi¬ cycle. For locking a bicycle, use is sometimes made of a lock of the wire cable type which ^' is an.element separate from the bicycle and may be used in the same way as the above-mentioned bicycle lock for locking one wheel of the bicycle, but which may also be used for locking the bicycle to an object, such as a cycle ' stand. . ' , . _. .

The first-mentioned bicycle lock while preventing or at least making the use of the bicycle more difficult yet suffers from the- drawback of not locking the bicycle to any object, e.g. a stationary cycle stand. The bicycle may therefore easily be stolen simply by being carried away. The cable lock, on the other hand, may be used for locking the bicycle to an object. However, prior art locks of the cable ^' type can easily be broken up, this impairing the locking efficiency. A prior art device 'disclosed in Swedish patent application 8202685-7 has been developed to eliminate these drawbacks. This known device comprises a locking arrangement fixed on a stand and intended to be secured about a portion of the bicycle frame, preferably the head tube of the bicycle, by means of a separate lock, such as a padlock. To make this device truly useful the bicycle-rider must always carry along his own separate lock for .securing the locking arrangement about the ^' bicycle frame portion.

The object of the present invention is to provide a device for locking a bicycle provided with a bicycle lock, to which device the bicycle can be locked without it being necessary for the bicycle-rider to bring along a separate lock for the purpose contemplated.

According to the present invention, this object is achieved by a device which comprises a stand and a member fixed thereon and adapted to hold the bicycle in an upright position, and which is characterized in that said member further is adapted to cooperate with the bicycle lock in such a manner that said mem¬ ber, together with the bicycle lock in the locking position thereof, ensures locking of the bicycle to the stand. The essential advantage of the present invention . thus resides in using the lock already existing on the bicycle for the locking operation.

The stand preferably has a part a-long which said member is disp-laceable for vertical adjustment. Said member is suitably arranged for engaging a part of the bicycle located adjacent the bicycle lock in order to hold the bicycle and preferably has a through opening which is designed, for receiving the locking"element of the bicycle lock. The invention will now be described in greater detail with reference to the accompanying drawings.

Fig. 1 is a side view showing a device according to the present invention for locking a bicycle;

Fig. 2 is a perspective view showing the locking device in more detail, and

Fig. 3 illustrates a retainer and engagement mem¬ ber included in the locking device in a sectional view taken along the line III-III in Fig. 2, a sleeve part of said member being indicated by dash-dot lines. In Fig. 1, there is shown a bicycle 1 which is locked to a locking device according to the present invention. The illustrated device holds the bicycle 1

in an upright position and thus also serves as a cycle stand. The device has a base or stand 2 and a retainer and engagement member 3.

The stand 2 comprises a bottom plate 4 and a part 5 consisting of a shank or post 5a directed ob¬ liquely rearwardly-upwardly and a shank 5b extending obliquely rearwardly-downwardly from the upper end of the first shank or post. At the lower end of the shank 5a, the part 5 of the stand has a circular fixing plate 6 which is fixedly connected to the bottom plate ^• 4 in a suitable way, in the illustrated example by means of rivets 7. The bottom plate 4 which preferably has a plurality of posts arranged side by side for making it ^' possible to park and lock.several bicycles, is made of checker plate in the illustrated example and rests on a supporting structure, e.g. the ground. If it is considered necessary, the bottom plate 4 is ^' secured ^* o the supporting structure. In order to . inhibit unauthorized removal, the bottom plate 4 may of course also be made of any other suitable material which is heavier than sheet-metal, for instance con¬ crete.

The retainer and engagement member 3 consists of a sleeve 8 which is displaceable along the shank 5b between its upper end and a stop provided at the lower end of the shank and consisting of a bead 9, ^' of a connecting piece 10 projecting at right angles from the sleeve 8, and of an 0-shaped retainer and engagement plate 11 which is substantially parallel to the sleeve 8 and has a central opening 12.

The connecting piece 10 consists of a metal tube 13 which is welded at one end to the sleeve 8 and at the other end fixedly connected to the plate 11, e.g. by riveting. A protective sleeve 14 of rubber is disposed around the tube 13, and a solid rod 15 of tempered steel is placed loosely in the tube 13. The rod 15 makes it more difficult to saw off the

connecting piece 10 since it will roll back and forth about its own axis when attempts are made to saw it off.

The retainer and engagement plate 11 is a metal plate which is provided on both sides with a protective rubber coating in order to prevent any damage to the bicycle 1.

As illustrated in Figs. 1 and 2, the plate 11 is adapted to be inserted behind one seat stay 16 of the bicycle 1 in order to hold the bicycle. The vertical position of the plate 11 is adjusted by dis¬ placing the sleeve 8 along the shank 5b such that the locking element 17 of the traditionally mounted lock 18 of the. bicycle 1 will pass* through the opening 12 of the plate 11 when the bicycle lock 18 is being locked. In this way, the bicycle 1 will be locked to the stand 2. The opening 12 in the plate 11 has . ' such a shape and size that it can receive the locking ^' element of different types, of bicycle locks, such as locks of an older type illustrated in Figs. 1 and 2 and locks of a more modern design referred to as block type locks.