DE20102369U1 - Anti-theft device - Google Patents

Description

Applicant: Date 7.2.2001

Dionys Fröhlich
Westlachenbühl 21
87600 Kaufbeuren
Phone: 08341 3872
Fax 08341 13693

Anti-theft protection

Anti-theft devices with a safety cable and locking lock, as are usually used on bicycles, are too large and inconvenient for winter sports enthusiasts and tourists who want to secure their luggage. The most commonly used combination locks easily freeze in wet and cold conditions.

From DE 298 22 337 U1 an anti-theft device is known in which the safety cable is fixed at one end and the other end is connected to the housing by means of a plug connection.

; In contrast, the described innovation has a particularly small, compact design without the need for sensitive I- mechanics and housing, but still has a relatively thick and long steel cable or chain and can be carried like a wallet.

To secure an item/object, the rope is released completely or to the desired length, then, after securing, it is pulled back by connecting it to a fixed object or other objects (partner ski or board, etc.), locked by inserting the locking pin into a locking body and the plug is pushed into the locking hole. The key is not required for this.

To unlock, the pull key is turned in a maximum of a few turns and then opened by pulling the locking bolt. An ejection spring pushes it out of the lock. The key is turned out, the rope or chain is then wound up manually and clamped again with the clamping screw.

Shown are Fig. 1 Front view with section through the closure body Fig. 2 Top view with clamping device

Fig. 3 Section through the closure body; variant with coding disk (enlarged)

Figure 1

The anti-theft device according to the invention consists of a winding body (1) which is arranged on a base plate (2). A safety rope or chain (3) is firmly connected to the winding body (1) at one end. The other end of the safety rope (3) has a locking bolt (4) which is provided with an ejection spring (5) and a seal (6). The safety rope (3) is wound onto the winding body (1) to a sufficient length and can be unwound as required to secure an object.e.&rgr;.

A bead-shaped locking body (7) is arranged on the base plate (2), in which a locking bore (8) is machined transversely to the axis of the locking body. The locking bolt (4) of the safety cable (3) is inserted into this locking bore (8). A bore (9) runs in the axial direction of the locking body (7), in which a bolt (10) secured against rotation is slidably arranged and locks the locking bolt (4) by means of a compression spring (11). The bolt (10) is provided with a thread on the side facing away from the locking bore (8) and is guided in a bushing (12) which is held by a pin (13).

A key (14) for releasing the locking bolt (4) is inserted axially into the hole (9). The key (14) has a thread on its front that matches the bolt (10). The locking bolt (4) is unlocked by screwing in the key (14) and moving the bolt (10) against the spring force of the compression spring (11). After the locking bolt (4) has been released, it is released from the locking hole (8) by the ejection spring (5).

The hole (9) can be closed with a plug (15) attached to the base plate (2) so that the inside of the hole (9) is protected from moisture and freezing. Different thread sizes and right- and left-hand threads make at least 10 different closures possible.

A much larger number of closures is made possible by a particularly advantageous variant of the closure, as described below.

Figure 3

The bore (9) is designed as a shoulder bore (16). A radially movable coding disk (17) with a central bore rests on its shoulder, which has one or more segments (18) extending inwards up to almost the thread diameter of the bolt (10), which in turn can be arranged offset from one another.

A guide bush (19) is firmly inserted in the shoulder hole (16) and exerts a defined pressure against the coding disk (17) via the spring disk (20) so that it is sufficiently braked when it is turned. In addition to the matching thread, the key (21) has groove-shaped milled recesses (22) on its front side that correspond to the inner contour of the coding disk (17).

Unlocking is carried out by inserting, screwing in and moving the key (21) and thus the latch (10), whereby the pressure of the spring disk (20) prevents the coding disk (17) from rotating when the key (21) is inserted and thus blocking the attachment hole (16).

Figure 2

Shows a clamping device consisting of a clamping screw (23) which is permanently connected to the base plate (2) by a riveted disc. The clamping bracket (24) is pressed onto the knurled knob of the clamping screw (23) by means of the compression spring (25), enabling the safety cable (3) to be inserted and clamped.

Claims (6)

1. Anti-theft device with safety cable or chain, locking bolt and locking lock, characterized in that a bead-like locking body ( 7 ) is arranged on a base plate ( 2 ) with a firmly connected winding body ( 1 ), which has a locking bore ( 8) transversely to its axis for receiving and locking a locking bolt (4 ) , into which a bore ( 9 ) made in the axial direction of the locking body ( 7 ) opens and in which a bolt ( 10 ) is received so as to be displaceable and secured against rotation, which bolt is pressed by a compression spring ( 11 ) in the direction of the locking bore ( 8 ) and has a thread on its opposite end which matches the thread of a key ( 14 ). 2. Anti-theft device according to claim 1, characterized in that the bore ( 9 ) is designed as a shoulder bore ( 16 ) and has at its shoulder, pressed and braked by a spring disk ( 20 ) supported against the guide bush ( 19 ), a radially movable coding disk ( 17 ) with a central bore, which carries one or more segments ( 18) extending inwards to close to the thread diameter of the bolt (10 ) , which in turn can be arranged offset from one another depending on the coding. 3. Anti-theft device according to one of claims 1 or 2, characterized in that the key ( 21 ), in addition to the thread matching the bolt ( 10 ), has grooves ( 22 ) on its front side corresponding to the shape and arrangement of the segments ( 18 ) in the coding disk ( 17 ). 4. Anti-theft device according to one of claims 1 to 3, characterized in that a clamping angle ( 24 ) is guided in a torsion-proof manner by means of a clamping screw ( 23 ) which is captively connected to a base plate ( 2 ) and is pressed away from the base plate ( 2 ) by a compression spring ( 25 ), thus leaving an adjustable gap for receiving and clamping the safety cable or chain ( 3 ). 5. Anti-theft device according to one of claims 1 to 4, characterized in that the bore ( 9 ) or ( 16 ) can be tightly closed with a plug ( 15 ) which is captively attached to the base plate ( 2 ). 6. Anti-theft device according to one of claims 1 to 5, characterized in that a seal ( 6 ) on the locking bolt ( 4 ), which is attached to the end of the safety cable or chain ( 3 ), while the opposite end is firmly connected to the winding body ( 1 ), is attached in a recess groove so as to be axially displaceable according to the spring travel of the ejection spring ( 5 ), also sealing inwards, and tightly closes the locking bore ( 8 ) after the locking bolt ( 4 ) has been inserted.