DE725775C - Tension lock for anti-skid chains - Google Patents

Description

Tension lock for anti-skid chains Tension locks with on one rotating ax middle piece attached tension hooks with automatic and non-positive locking Locking in the clamping position are known. It is also still a tension lock known, the one attached to a rotatable center piece _ clamping hook and one automatic and non-positive locking in the clamping position by a spring-snapping, has exposed lever.

In contrast, the subject of the invention is different Tension lock, in which there are pegs on the tension hook, on the middle piece a. resilient bolt is arranged, the openings corresponding to the pin is provided and so secures the lock against unintentional opening in the tensioned position. A lifting movement and a simultaneous turning movement are necessary for opening.

The figures represent an exemplary embodiment of the invention , namely Fig. i top view of the closed tension lock, Fig. 2 Section A-B Longitudinal section through the closed tension lock, Fig. 3 Section C-D cross-section through the closed tension lock, Fig. 4 top view of the Tension lock in intermediate position, Fig. 5 section E-F the cross-section through the Tension lock in intermediate position, Fig. 6 Top view of the opened tension lock in the extended position.

In the embodiment shown, the hook is i, on which a mandrel 2 is arranged with an inclined contact surface 3, through the pivot pin 4 on the Center piece 5 hinged, which consists of the Tei15 with attached stop 6 and the lower part 17 (section 3). In the same way, the hook is on the pivot pin 8 g articulated, which has an approach i o with an inclined contact surface i i. With the middle piece part 5 is the bolt i 2 with bolt i 8 and springy (Fig. 2 and 3) connected in such a way that it is elastically raised in the direction of the axis of the bolt i ä can be without the lateral contact with the stop surface 6 of the part 5 to lose, so that in the Schwenheb, e: ne the hooks i and 9 a permanent coupling of the bolt 12 is secured with the middle piece 5. The latch 12 has two holes 13, i ¢ and two associated inclined contact surfaces 15, 16 and is with surfaces i9 for attacking the key 2o indicated in Fig. 5.

To close the toggle fastener with the key 2o, the Bolt 12 with the central piece part 5 coupled therewith by the stop surface 6 turned; so the hooks i and 9 come into the in Fig. q. and 5 position shown with the contact surfaces 3 and i i of the lugs 2, i o against .the contact surfaces 15 and 16 of the bolt 12, as a result of which it is automatically raised against the spring 17. at the further closing movement engage the holes 13, i q. of the bolt 12 on the Lugs 2, 1o of the hooks i, 9 a; the lock is thus secured.

To open the tension lock, it must be turned back before it can, the bolt 12 can be raised against the spring 17 with the key 2o so the holes 13 # i -. exempt from paragraphs 2, i o; it then finds the opposite Movement process takes place.

Claims (3)

PATENT CLAIMS: i. Tension lock for anti-skid chains with tension hooks attached to a rotatable center piece with automatic and force-fit locking in the tensioned position, characterized in that pins (2, io) are arranged on the hooks (i. 9) and the center piece (5) has a resilient bolt (12 ) which is provided with openings (13, 14;) corresponding to the pins (2, io). 2. Tensioner lock according to claim i, characterized in that the bolt (12) and middle piece (5) in the plane of rotation against any relative movement by stops (6) are secured against each other. 3. Tensioner lock according to claim i and 2, characterized characterized in that inclined surfaces (3, 11 or 15-16 arranged only on one side of the pin (2, 1o) or on the bolt (12) are.