DE1529504A1 - Holder for curved springs and device for hooking the springs on the same - Google Patents

Description

Pct. ~ R.tanwcllio

. DfpI.-ΙπΓ .. I !. C ^

Dipl.-Phys. Cr. K. S: 'woinzer 85 U Ü RN Ü ERG Essenweinstraße 4-ό

9.N0VI

3900-66 Establishments BERTRAND FAORS

Holder for curved springs and device for hooking the Feathers on the same.

Priority: France, December 15, 1965

The invention relates to the holder of springs, which by a ziokzagformig extending, curved or corrugated wire and intended for the formation of the elastic framework of seat cushions, Idegestatten or mattresses are, as well as the devices for hooking these springs to their holders.

Of such holders and hooking devices The invention relates in particular to the fasteners used for fastening the ends of exogenous straps, in which the joint section of the

309 3 "Ι / ΟΙ A8 _{BAD 0RieiNAL}

last turn has a bent free end towards the interior of this turn _{Z u.}

The invention aims in particular to design such holders and hooking devices so that they better than before to meet the various requirements of practice.

For this purpose, according to the invention, such holders have a preferably tubular, rigid framework and at least a rigid wire, which is bent into successive corrugations lying in one plane and on the skeleton in particular is attached by welding at points which are on one of the apex lines of its corrugations or in the vicinity thereof lie, the distance between two wire sections, which lie on both sides of the same apex and this with the two join adjacent vertices of the opposite vertex line, slightly smaller than the inside transverse dimension of the last one Turn of the bent spring to be held is so that this last turn can be hooked with the wire, such that it overlaps these two wire sections without significant play and extends in either two opposite directions supported only on the wire, or on the wire and on the framework, at least at the end of an angular deflection of limited amplitude.

The invention is explained below by way of example with reference to the drawing.

1 and 2 show in a vertical section along the line I-I of FIG. 2 and in plan view a with a holder according to the invention hooked end of a curved spring.

Fig. 3 shows schematically the front end of a Spring for seats ο «the like, the end of which corresponds to Fig. 1 and 2 is appropriate.

909851 / 0U8

BATH ORIGINAL

Figures 4 and 5 show in a vertical section along the line IV-IV of Pig. 5 or another in plan view with its holder according to the invention hooked end of a curved Feather.

Fig. 6 shows schematically the rear end of a Spring for seats or the like. The end of which corresponds to FIGS. 4 and 5 is held.

The one mainly intended for vehicle seats

Embodiment has a bent spring 1, in which the last section 2 has at least one of the last turns has an end 3 bent towards the inside of this turn, this last turn is to be hooked with a holder.

According to the invention, this holder has a rigid framework, preferably formed by tubes 4, and a rigid wire 5, which according to corrugations lying in one plane is bent and placed on the skeleton, in particular by welding at points 6, which on one of the apex lines its corrugations or in the vicinity of them.

The distance between two sections of wire

(e.g. 5.J and 5 £ in Figs. 2 and 5), which one of the on the skeleton 4 attached vertex of wire 5 to connect the two neighboring vertices of the opposite wavy line is only little smaller than the corresponding inner dimension of the last turn to be hooked. This turn can therefore after their Attachment to these wire sections, these sections without substantial play in the transverse direction on the one hand with their bent end 3 and on the other hand with its bent portion 7, which its transverse end portion 2 with its opposite parallel section 8 connects, include »

909851/01 / »8

Pur this attachment of the winding to the sections 5 * and 5_ of the wire 5 bring this turn first across these sections, whereupon the turn is shifted so that its end section touches the bottom of one of the Contact surfaces 9 in the form of a re-entrant dihedron sets which between the wire 5 and the framework 4 in the zones their mutual contact have arisen, and / or one puts this turn so obliquely that it turns into two opposite ones Directions according to a first in Pig. 1 to 3 shown Execution is supported only on the wire 5, or partly according to a second embodiment shown in FIGS. 4 to 6 the wire and partly on the framework 4.

The arrangement of the end section 2 on the ground

a re-entrant contact surface 9 can be used to create a small pivoting possibility for this section.

Preferably, however, versions are

iiutst, in which each pivoting movement of the last hooked Winding is prevented by their above supports in two opposite directions.

In the first shown in Figs

Execution is the end of the front portion of a curved spring for a seat or the like. unverschwenkbar interlocked with a holder, whose wire 5 has relatively high levels of corrugations, wherein the last turn of the spring at four points being supported on said wire, namely, at two points of the portion 2 on one side of D _r ahtes (under the wire in Fig. 1) and at two points of section 8 on the other side. The arrow 10 indicates the direction and the sense in which the stresses constantly exerted on this end after its installation

9 0 ¹ J 8 5 1 / Π Ί / ■ 8

works.

In the second embodiment of Pig · 4 to 6, the end of the rear portion of another is curved Spring for seats or the like. non-pivotable with a tube 4 hooked, which is provided with a wire 5 whose corrugations are relatively low, the last turn this peder on the one hand with its end section 2 directly on the tube 4 and on a wire section 5 adjacent to it and, on the other hand, at two points of the bent end 3 and the connecting portion 7 on the wire 5. The constantly on Forces exerted on this end after its installation are indicated by arrow 11.

The ends of the bent springs to be hooked and / or the rigid fastening wires are expediently of envelopes, not shown, made of rubber or plastic, which on the one hand increases the contact surfaces for interlocking and thus the risk of slipping is reduced and, on the other hand, the noise caused by bumps or mutual displacement when working the springs are reduced.

The invention can of course be modified. In particular, the person in direct contact with the Skeleton, standing section of the last turn of the bent leather instead of the end section 2 being the penultimate section 8, then for the onset of this turn, in addition to the above-mentioned overlap, an additional turn of this turn by 180 ° around the two wire sections 5 ^ and 5 " is, which presupposes that on the one hand the plane of this last turn has a preferably epic angle with the plane of the Hachbarwindungen forms, and that furthermore the distance between these wire sections is at least locally smaller than the distance between the two

909851 / 0U8

Spring sections 2 and 8 is.

r.

909851/0148

ORIGINAL INSPECTED

Claims (5)

15295U4 Claims li ·)) System for hooking one end of a curved Spring in which the end section of the last turn has a free end to be bent over towards the inside of this turn has, characterized by a rigid, preferably tubular Framework (4) and at least one rigid wire (5), which to successive corrugations lying in one plane is bent over and attached to the framework, the distance of two wire sections (5-., 5a) »which on both sides of the same wave crest and these with two neighboring crests the opposite wavy line, slightly smaller than the inner transverse dimension of the last turn of the to holding bent spring (1) is in such a way that this last turn can be hooked with the wire by using it without noticeable Play over the two wire sections and move in two opposite directions either only on the wire, or is supported on the wire and the framework, at least at the end of an angular deflection of limited amplitude. 2 ·) interlocking system according to claim 1, characterized in that the rigid wire is welded to the framework is attached by points (6) of the wire, which are on one of the apex lines of its corrugations or in the vicinity same lie. 5.) interlocking system according to claim 2, characterized marked that the other sun line of the corrugated wire is formed by straight sections extending in the general direction of this wire. 4.) interlocking system according to claim 3, characterized 9 0 9 8 5 1 / 0Ui: “AD ORIGINAL marked ι that the two apex lines of the corrugated Wire can be formed by straight sections extending in the general direction of the wire. 5 ·) interlocking system according to at least claim ti, characterized in that the one (2) of the two rectilinear transverse sections of the last turn on the bottom of one (9) of the contact surfaces in the form of re-entrant The latter is arranged, which are created between the wire and the framework in the zones of their mutual contact. Stahmann - Dl Schweinzer 909851 / 0U8