DE3012886A1 - COMPONENT FOR CHAIN HARNESS - Google Patents

Description

DIPL.-INQ. DIETER JANDER DR-INQ. MANFRtD BUNINQ PATENT LAWYERS

RUD chain factory

Rieger & Dietz GmbH. & Co. 280 / 17.684 DE

"Component for chain harnesses"

The invention relates to a component belonging to a construction kit with chains used to assemble chain harnesses, the nominal thicknesses of which are graduated in such a way that the nominal thickness d following a hen thickness d ^ is a multiple f of the respective nominal thickness d *, and that with a is stranded an insertion gap and a bridging retaining bolt for a chain link having connection head to which only one chain link of the respective nominal thickness d _{n can be} connected, the retaining bolt being secured by a securing element in a part of a stepped bore which has a bore section with a smallest diameter D. which is smaller than the diameter D of the retaining bolt.

Components of the above type are known in which the diameter D- of the stepped bore for a certain one Chain nominal thickness d ^ associated retaining bolt is smaller than the Diameter of the next smallest chain nominal thickness d ,, trains- · arranged retaining bolt of a correspondingly smaller component. To this extent, such a component design has a certain degree of it Danger in itself, as with negligent connection of a chain strand to a component not only that to the respective component The corresponding retaining bolt can be inserted into the stepped bore and secured there in such a way that it cannot be lost, but also a retaining bolt, which belongs to the next smallest component of a construction kit. The result is that the retaining bolt is the one intended for him Function of a on the inner width b. of a chain link with the correct nominal thickness can no longer be fulfilled able, and the combination of a chain and a component

130041/0621

BATH. ORIGINAL

3012386

DIl ⁷ L-INQ. DIETER JANDER DR.-INQ. MANFRED BONINQ MIiNTANWXUi

becomes possible whose load capacities are not coordinated. Known components of those under consideration Art can in other words, the inevitable lack of confusion between the elements of building sets to put together from chain harnesses.

The invention is based on the object of creating a component of the type described at the beginning in which the risk of using a retaining bolt that is too small is practically eliminated. According to the invention, this object is achieved in that the diameter D. of the stepped bore is greater than the respective 1 / f times the diameter of the retaining bolt, and the ends of which form guide peaks that allow its insertion into the bore section of smallest diameter D. of a component for a chain link of the next larger hen thickness d _{n + 1} .

The component according to the invention offers the advantage that an inadvertent Retaining bolts that are too small inserted into the stepped bore are automatically restored when handling the component slips out of the stepped bore because the diameter D of the narrower bore section is greater than the diameter of the too small retaining bolt and this by its guide tip facing away from the security element from the Lead-in side of the stepped bore opposite the stepped bore end is extracted.

Further features and details of the component according to the invention result from the subclaims and the following description of an exemplary embodiment. Show it:

Fig. 1 partially in section the connection head of a component with a chain connected thereto and

FIG. 2 shows a detail of FIG. 1 on an enlarged scale.

130041 / OS21

ORIGINAL

DIPL.-INQ. DIETER JANDER PR.-INQ. MANFRED BUNINQ ^ ^ ~ PAITNIANWALIf

In Fig. 1, 1 is the connection head of a component not shown in detail, which can be designed, for example, as a closed ring fork. The connection head 1 is provided with an insertion gap 2 for a chain link 3 with the nominal thickness d _n . A stepped bore for a retaining bolt 4 with a bore section 5 of small diameter D is perpendicular to the insertion slot 2. and a chrur; f: r, abr.chnitt 6 of large diameter D arranged. The large diameter D is slightly larger than 1.2 times the nominal thickness d of the chain link 3, while the small diameter D ^ _{n is} equal to half the Sun :: ne of 1.2 times the nominal thickness d and 1.2 times The nominal thickness d _{Λ of} a chain link, not shown, of a chain of the next smaller load capacity level, the increments f between each two successive chain nominal thicknesses being preferably in the order of magnitude of 1.125 to 1.35.

To secure the retaining bolt 4 in the intended section 6 of the stepped bore, on the one hand section 5 of the stepped bore and, on the other hand, a locking element 7 running transversely to section 6 of the stepped bore, which is preferably formed by a clamping sleeve.

If, contrary to expectations, a retaining bolt 8, shown in phantom in FIG. 1, becomes a component for chains belonging to the next smaller nominal thickness d ^, inserted into the stepped bore 5, 6, it can pass through section 5 of the stepped bore slide out of it unhindered.

To prevent too small a retaining bolt from the stepped bore To facilitate a component that is too large, the retaining bolts 4 and 8 are provided at their ends with guide tips 9 or 10, which have the shape of truncated cones with a flank angle oC of at least 45 and a height of 0.15 d or 0.125 D, where D is 1.2 times the nominal chain thickness d corresponding diameter of the respective retaining bolt

130041/0521

- 6 ORIGINAL BATHROOM

DlPL-INQ. PItTER JANI) ER PR.-INQ. MANFRED BONINCJ

is. In contrast, the chamfer 11 corresponds to that usual acute angle of a drill, which is known to be on the order of 118.

MB: BL

130041/0521

Blank page

Claims (7)

Expectations : 1. Component belonging to a construction kit with chains used for assembling chain harnesses, the nominal thicknesses of which are graduated in such a way that the nominal thickness d following a nominal thickness d ^ is a multiple f of the respective nominal thickness d ^, and that with an insertion gap and this bridging retaining bolt for a chain link having connection head is provided to which only one chain link of the respective nominal thickness d. can be connected, the retaining bolt being secured by a securing element in part of a stepped bore which has a bore section with a smallest diameter D * _ which is smaller than the diameter D of the retaining bolt, characterized in that the diameter D. of the stepped bore (5,6) is greater than the respective 1 / f times the diameter (D) of the retaining bolt (4) and the ends of which form guide tips (9,10) which are inserted into the bore section (5) of the smallest diameter D _mln Allow component for a chain link of the next larger nominal thickness U _{n + 1} . 130041 / Q6Ä1 DlPL-INQ. DIETER JANPER DR.-INQ. MANFRED BCiNINQ PATENIAMWALTf - 2 - 2. Component according to claim 1, characterized in that that the fourth of the multiple f are less than 1.5. 3. Component according to claim 2, characterized in that that the values of the multiple f ^ 1.125 and = 1.35. 4. Component according to one of claims 1 "to 3, characterized in that the diameter D. the stud Bore (5,6) is equal to half of D + ^ D. 5. Component according to one of claims 1 to 4, characterized in that the guide dome (9, 10) is formed by a truncated cone, the plank angle of which is <* - at least 45 °. 6. Component according to one of claims 1 to 5> characterized in that the guide tips (9,10) of a truncated cone is formed, the height of which is about 0.125 D. 7. Component according to one of claims 1 to 6, characterized in that the length L of the retaining bolt (4) is at most equal to its 3-fold diameter D. 1300 * 1/0621 ~ ³ ~ BATH ORIGINAL