Connecting link for tire chain

BACKGROUND OF THE INVENTION The invention relates to a connector for anti-slip chains having reception openings arranged for adjacent links, at least one of which is provided with an outwardly leading entrance opening.

The object of the invention is to make the connecting element more robust or more rigid without a substantial increase in the cross-section. to increase the strength of the connection created by means of this member, so that this connecting member can withstand even very high loads.

In a connecting member for anti-slip chains with receiving openings provided for adjacent links, at least one of which is provided with an outwardly leading suspension opening, according to the. invention, a locking bolt is mounted in the switching element movable in its longitudinal direction and which opens the suspension opening in one position

9 0 8 0 2 5 and in its other position leaves it free and. at the free end of which an abutment surface extending transversely to its longitudinal direction has been added to the member* As a result, the free end of the locking bolt is securely supported so that the locking bolt cannot be pushed aside by the other links suspended in the connecting member in such a way that the suspension opening of the connecting member is made free.

Furthermore, it is achieved by the embodiment according to the invention that the closing bolt cannot be pushed out of it in one direction through the suspension opening of the connecting element, since the contact surface of the connecting element for the free end of the closing bolt serves as a stop surface.

The invention is elucidated with reference to the appended figures. .

Figure 1 is an elevational view of a connector according to the invention;

Fig. 2 is a sectional view taken on the line II-II in Fig. 1; Figure 3 is a bottom plan view of the member of Figure 1;

. Fig. 4 is a section along the line IV-IV in Fig. 1.

The drawings show a connecting member with the essential embodiments for its use, which, both individually and in combination, contribute to the fact that the connecting member represents an improvement over the conventional connecting members from the standpoint of manufacturing technology and according to the purpose of use.

. As shown in figures 1 to 4, a connecting element 1 is designed as a bridge piece of great strength, the side surfaces 6 of which both from the tread 4 on the ground and from the contact surface 3 facing away from it in front of the tire towards the center of the tire. The connecting element is inclined towards each other in such a way that the cross-section of the connecting element is essentially a double trapezoid as shown in FIG. 2 and has a low weight. The tread 4 on the ground is formed by two individual planes inclined like a roof at an obtuse angle to each other intersecting each other in the longitudinal median plane and at an acute angle

S9 S⁸⁰²⁵ relative to the side surfaces 6 into which they merge. Connecting member 1 has on one side a continuous receiving recess 2a for a link, closed over the entire circumference, while on the other side an elongate receiving opening 2 is provided, into which a suspension opening 10 located approximately in the middle of the length of connecting member 1 opens. . In the limb 5 of the connecting element 1, there is provided a passage bore 13 inclined in accordance with the suspension opening 0, in which a press-fit closing bolt 14 is guided slidably over a relatively long length such that the connection between the receiving opening 2 and the suspension opening 10 is so far can be closed so that a link hooked into the receiving opening 2 can no longer be unhooked, The strength with which the locking bolt secures the links connected to each other by the connecting member relative to the connecting member is very great in the comparatively small dimensions of the locking bolt, since in the closed position it is supported on one side approximately over its entire length. The body part of the member receiving the closing bolt has side surfaces which are obliquely spaced towards its outer surface, the resulting widening of the wear surface 20 of the connecting hook on the connecting member providing the largest cross-section precisely where the bore for the closing bolt is passed through. .

On the side facing the closed receiving opening 2a, the connecting member has an abutment surface 16 which is inclined towards the longitudinal direction of the bore 25 13, with which the closing bolt 14 comes into contact with its free end 15a, so that the closing bolt is securely supported by this abutment surface. The abutment surface 16 is arranged in such a way that the free pin end 15a is increasingly deflected through the abutment surface 16a when the pin 14 is driven in in the direction of the hooking opening 10 through the abutment surface 16 and the pin 14 assumes a bent pretensioned position and thus relative to the abutment surface 16 is clamped. The abutment surface is arranged perpendicular to the longitudinal median plane of the organ, so that no transverse forces act on the longitudinal center plane of the connecting member. The locking bolt can be loaded in its longitudinal direction above or below its elastic limit. The sliding abutment surface 16 forms the one boundary of the suspension opening 10, whereby it is formed opposite the surface 16 situated by the front side of the nose of the hook 12. boundary seal 11 of the hook-in opening 10 is arranged perpendicular to the longitudinal center plane of the connecting element 1 and parallel to the longitudinal direction of the bore IJ. It is also conceivable to arrange the contact surface perpendicular to the longitudinal direction of the locking bolt, so that the locking bolt can therefore come into contact with the contact surface with its end face.

Because the receiving openings 2, 2a are arranged eccentrically in the connecting member 1, the body portion 5 with the . tread 4 has a greater height than that of the body portion 7 which the contact surface 3 has on the tire.

The corner zones 8 of the substantially rectangular connecting member 1 are strongly rounded in quarter-circle shape. As shown in FIG. 3, the body portion 5 with the tread 4 is uniformly widened from both ends of the member toward the center of the length of the member 1, so that the body 5 thus has its greatest width at the center of the length of the member. the organ has 1. The web portion 7 with the contact surface 3 for the tire is according to fig. 4 equal in width over its entire length. '

Because the free end 15a of the locking bolt 14 engages in the hook. opening 10 of the hook member 1, the links hooked in the receiving opening 2 can no longer detach from the connecting member 1, since the distance from the front end 15a of the locking bolt 14 to the end face 11 of the nose 12 of the hook is smaller. than the corresponding cross-section of the hooked-in link(s)_O In the closed position of the closing bolt 14 according to Fig. 1, the front side of the rear end 15 thereof lies in the running surface 4. The longitudinal axis of the closing bolt passes through a hook-in opening, so that the closing bolt 35 is free in the fitted position; yinze can lie in the hanging opening.

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For the removal of the locking bolt 14 from its closed position according to FIG. 1, the locking bolt is knocked out through the through-bore 13 in one of the two possible directions, e.g. with a mandrel, so that the links hooked in the connecting member 1 can be unhooked, The locking bolt 14, which has been loosened in this way, can if necessary be reinserted into the bore 13 from the running surface 4, if necessary.