DE2252959A1 - FEATHER - Google Patents

Description

Description;

In known springs of the type specified in the generic term of the claim. are.the.lever.arms.in.the.steady.state, in..stretched.or more or less.strong towards the. angled position, and they iron z _o B ₀ .Compared to conventional screw springs, .dBn advantage on the fact that the parts to be worn. effective. Spring force during compression, i.e. with ... mutual approach .thisr, Τεϋε, .only increases slightly _o This is, as is well known, from. the. above. den.Schwenkbereich of the gestreckten.zur.parallelen, d _o h _o to je.90 .geschuenktEn.Stellung of the lever arms at the same time with the steady increase of the spring-BiegBmomentes also taking place increase the effective length of the lever arms hero

For different applications. especially with check valves, but SE is itself a relatively small increase in the effective Spring force is not desirable, but rather a decrease in the same when one strives =.

The invention.indicated.in the claim.is.based on the task, which To make springs of the type mentioned so that sine with the EinfEdsrn The effective spring force decreases *

It was found that the. on the parts to be cushioned against each other effective spring force from, the.stretched.to.parallel.position of the • Lever arms decrease if the spring is already under tension when the lever arms are in the extended position «

The drawing shows an exemplary embodiment of the subject matter of the invention It shows:

Fig «1, the spring according to the invention in installed condition, Fig _a - 2, the spring of Figure _s 1 in the relaxed state and Figure 3 shows the spring of Fig.". 2 in side view. ^

The spring 1 has helical turns 2. on «. The Uindungsenden are formed to two transverse to the Uindungsachse 3 extending lever arms k, 5 and. with their free, trained to hold evil 6, 7

409819/0084

End in the manner of a buckling rod under the pretension of the spring between two beams 8, 9 to be cushioned against each other axially clamped to. The lower part S thereby forms a stationary one. FederuiiderlagBrbock, ωΗπ-rend the upper part 9 is arranged hubbeueglich and .. a stop 10 to its upper stroke position defined erhälto during compression lead h the two lever arms, 5 directed toward each other Schuenkbe-impulses to the LJindungsachse 3, whereby the turns 2 in this case at Bending stressed ^

In Figure "2, the spring of Figure 1 shown in a relaxed condition focus is on the lever arms k, 5, measured on the Schuenkbereicbsseite in a Ldinkel ^v of more than 180 to each other ,, They are thus based on the installed state, beyond the sprung back in the extended position.

With such a design of the spiral spring 1, namely if the spiral spring 1 is already under tension when the lever arms A, 5 are in the extended position, the spring force exerted in the stroke direction on the parts 8, 9 takes along with it from the uppermost stroke position of the part 9 Approaching the same to the part 8 abo

- 3421 TSR-Bs / Gr

40981 9/0084

Claims (1)

feather Claim: · · Spring with bending stressed bindings, whereby the two ends of the connections are designed to be lever arms running transversely to the axis of the winding and which are axially clamped in the manner of a buckling bar with their free ends against each other, parts to be cushioned. and when compressing against each other, directed Schuenkbetjegungen. and carry out the axis of the axis, g ek enn.z ei ch η et through. such a design of the spring (1) that its lever arms (k, 5) .with a completely relaxed spring. (1) .in.a.angle (at). from above. 180 ° to each other, with the lever arms in their, installation position. (.U, 5). With the spring (1) being pretensioned over the extended arm position at an angle (»Ο of less than 180 ° to each other) 409819/0084 Blank page