DE1557544B1 - Elastic stretchable metal band - Google Patents

Description

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The invention relates to an elastic stretch In addition, there is the known tape Bares metal band, consisting of transversely to the longitudinal danger that when contracting in particular axis The main links of the ligament, which, after larger stretches, move objects into the pinch gaps between the hollow links with the adjacent main links at their ends, from the longitudinal edges of the band in each case in a band- 5 The object of the invention is to create an elastic stretch plane both near the top of the tape and metal tape of the type explained above to create near its underside by offset to one another, both in the rest position and in orderly, joint-like intermediate links connected stretching position appearing evenly are. Surface and simply structured and economical

As is known, the problem was how to produce an elastic io economically.

To create metal tape, the uniform visible upper The invention solves this problem in that

has surfaces with the possibility of different decorative effects, not only in a known manner together with a large edge, but also the fact that it is arranged in a single band and that it can be stretched softly. achieve, always difficult to neten intermediate links to each other staggered to solve. 15 net.

Among other things, a stretchable metal band is used. In this way, a metal band is produced.

became known, which extends in a figure-of-eight spiral-like manner, in which each main link was selected for torsion Has elements that are subject to a curvature after the elongation of the belt, whereof it Have axis, these elements with the by in this way the band itself a flat adjacent symmetrical elements connected 20 layers preserved at any degree of expansion between whose spirals the spirals of the in remains.

Contemplated element blend and of course the practical embodiment can m

remain connected to them via pin elements, which provide for the intermediate shapes of the belt, based on the the intertwined spirals introduced standing thoughts become extraordinary, alternately on two parallel 25 divider-like, in particular depending on the shapes, Levels. which are given to the main links who hold the tape

The solution mentioned offers the possibility of Me- represent. Also the links between the Tall bands with great elasticity and softer adjacent main links can have different elasticity which, however, as a result of the bulges take on forms, depending on the practical its surface a certain inconvenience- 30 requirements resulting from the type of used can cause the wearer. Main link.

Incidentally, the same solution does not offer any full potential cover telescopic members can be in permanent flat, outer surface of the tape, ins-. are used in special cases, if the particular in an extended position, which makes it appear measured, for example, to be special it becomes difficult to achieve particularly decorative effects on this surface, to achieve relative effects. All of these different embodiments can

In this type of belt, the spiral elements are referred to as Heeiner in the context of the present invention Bending stress during expansion can be considered if the same is inventive subject to the tape, which forces enough thought to be exploited. For example, it can to use large metal thicknesses to make a sufficient 40 main link of the strip of thin, rectangular To achieve elastic reaction force, there are also corre- sponding plates, which are provided by intermediate links on the corresponding to a limited degree of curvature of the transverse "height of the four corners with the adjacent panels element. one after the other on the one longitudinal edge of the joint

Another extensible media that has become known is when along the circumference of the plates tallband consists of strung together, transversely to 45 has proceeded. During the expansion of the Ban longitudinal axis the hollow links running through the band, the small plates deform and become whereby the hollow links are essentially subjected to torsion by the longitudinal belt edge. One th imaginary plane in the end faces of adjacent hollow links on which the longitudinal axes of symmetry inserted connecting links are connected to each other, thus remains with any one are those that alternate between an upper and a 5 ° degree of expansion of the band so unchanged, staggered lower row on the belt arranged some embodiments, such as the

th connecting links, the ones mentioned above, cannot be sufficiently aesthetic surface or undersurface side of the tape offer angeord- appearance and in this case that would be vornet are, take an elastically stretchable band called opposite to one another as preferred Position. In order to use such a band with mutually sliding or To bring about elongation, the hollow links are covered for each non-sliding Abdeek telescopic link, according to the degree of stretching by a certain which by appropriate means on the main limbs of the Angle tilted from its normal position, with a band arranged and possibly with an upper spring mechanism inside it ensures that surface decorations are provided, a torque 60 is thereby applied to the connecting links. This embodiment is particularly simple in FIG is exercised so that under the action of the spring the mental execution and is entirely suitable Mechanism the hollow limbs have an endeavor especially to the understanding of the other prakin tilt back to their normal position. This band is to raise tables of embodiments, one by one are illustrated standing because of the necessary spring mechanism.

technically complex, on the other hand, changes 65 main links, which have the same inventive face when it is stretched, it is based on the appearance of its upper thank, as in the case of the surface described above quite considerably, which for reasons of a given, can be achieved, for example, by desired decorative effect is unfavorable. small rods or tubes are used that

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can also have modified profiles and which are produced, making them in this way and

possibly composed of composite elements, ways take on the most varied of forms preferably from two parallel in the rest position can.

lying, connected to one another by a web part Tubes exist. In all of these cases, the belt always remains the invention the adjacent main links proper connection of the adjacent main compartment placed next to each other and not interwoven with intermediate links in double alternation, the positions and their stress on torsion

For other embodiments of the invention at the moment of stretching the tape. It will

According to the band, however, the possibility of using a screw can also be provided

mig wire-wound main links used to manufacture main links that are made from parts of

formed an oval or the like cross-section of Milanese braid (the well-known

or have a cross-section in the shape of an eight, metal mesh that has long been different

with the turns in the gaps being used for purposes of use). The joint

between the turns of the adjacent main 15 connection points of the adjacent main links

insert links and alternate them twice in this case by means of pins or in the form of

Selenden connection points, be connected to one broad side of the mesh.

As seen on the tape or on the longitudinal edge of the tape, the possibility has recently been considered

are coupled; for example, through intermediate links, drawn to achieve multiple bands in which the

which are repeated two or more times from short, to prevent slipping out of the main links

are divided into secured, relatively short pins, which, be it in the direction of the strength of the tape,

that between the interlocking windings be it in the direction of its width. All of these possible

Gen of the adjacent main links are inserted, borrowed embodiments fall within the scope of the

in this way become the present invention in duplicate.

alternating both with respect to the main plane of the 25 In the drawing sheets, constructive AusBandes as well as with respect to its flanks are shown forms of introduction, which are given as simple, not otherwise connected main links on torsion in the restrictive example.
Stressed over the course of the expansion of the band. In Fig. 1 (drawing sheet I) shows a schematic of the cases now mentioned, the belt can take on the aesthetic embodiment of a stretched belt with main tables appearance of a fabric, the 30 sections of which consist of thin, rectangular plates of visible surface no special covering elastically deformable material ;
elements need and directly decoration work Fig. 2 and 3 show two helical can be subjected to, for example, main links wound by dia wire, right-hand and casing processing or the like be of different shapes. 35 of a second embodiment of the invention;
For example, a metal wire of circular shape. 4 and 5 show left and right hand cross-sections can be used or a band formations of main links of a third embodiment rectangular cross-section, without thereby leaving the frame of the invention from the front and from the side of the invention. seen;

For example, the above-mentioned 40 Fig. 6 (drawing sheet II) shows in perspective

Pins should be provided with a slight bend, the shear view right- and left-handed main links

prevents slipping out. The intermediate links made of multiple screw turns with oval transverse

can of course also cut various shapes of a fourth embodiment of the invention;

accept, depending on the need. The main Fig. 7 shows in a perspective view right

Links are preferably made helical with a permanent 45 and left-handed main links

Deformation provided so in them, even in wound strip material with a cross-section in

Rest position to achieve a bias. By the form of a fifth embodiment of the invention,

this measure, the main links in each case in a manner similar to that in FIG. 4 and 5;

held in mutually adjacent positions, Fig. 8 also shows an embodiment of an intermediate

when the ligament is not stretched. The bias 50's member as a connection for the main links of the

also prevents the intermediate links from accidentally tying the tape;

tends to slip out. Another feature that Fig. 9 shows a second embodiment of the

also with the bands according to the invention there is an intermediate link according to FIG. 8th;

is, there is the possibility of the main members from Fig. 10 (drawing sheet III) shows schematically

increase, which means the lengthening or shortening of the 55 a piece of ribbon made up of the main links shown in FIG. 7th

Band allowed, for example, to it is made, in the unstretched position, limited

to bring the desired length. For the purpose of the association on one of its parallel levels;

Simplification of this maneuver can be provided, Fig. 11 shows schematically a piece of tape, similar

the intermediate links in the form of U-shaped Fig. 10, but in the expanded position;

Form brackets, the two pins of which are each shown in a perspective view

Adjacent main links from the band longitudinal side section of a stretched according to FIG. 11

engage the edges. This feature of the single band;

The control of the length is particularly valuable. Fig. 13 (drawing sheet IV) shows schematically

in the case in which the tape is intended to use a sixth embodiment of the tape in unspecified

Depicting bracelets for wrist watches. 65 stretched position;

In the various possible embodiments, Fig. 14 shows the same type of tape

Shapes of the subject matter of the invention can be shown in FIG. 13 in the stretched position;

Main links also by cutting and punching F i g. 15 and 16 show two embodiments

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of intermediate links of the tape of Fig. 13 are arranged pages, at least one of the and 14; Pins of each bracket 15 with a slight curvature

17, 18, 19, 20 and 21 show further designs. The main links of the band can approximate shapes of the main link of the band; either by screw turns from a single

Fig. 22 shows some telescopic members for the Ab- 5 zigen wire are formed with a circular cross-section the main links of the band. the, as shown in Fig. 2, 3 and 6, or consist in detail in the embodiment of a thin, rectangular plate, such as According to FIG. 1, the main links can be seen from thin, right-hand FIGS. 4, 5 and 7, or else angular plates 1 made of an elastically deformable otherwise formed and with different transverse material, be provided with the adjacent main limbs cut io.

are connected, through intermediate links, in all of these embodiments and in the

which are labeled 2, 3, 4 and 5. The other connections that are derived from these are each main dung point are provided twice in alternation, link, such as the main link 16 (Fig. 10) be it in relation to the width of the band as well as with the adjacent right main link 17 or in proportion to its strength. The panels 1 can be connected to the adjacent left main link 18, in one of the greatest shortening of the band, namely on the opposite sides of the band given Limit position an absolutely flat shape, for example with hooves of pins 19 and 20. assume and are torsionally stressed and dem- this on the upper level of the belt while on according to elastically deformed when the belt is stretched the lower level the same main link 16 will. ao (Fig. 12) with the left main link 18 or with

Even with any degree of extension of the right main link 17 by a pin 21 or band, the longitudinal axes of symmetry of a pin 22 remain connected. All connecting pins Λ main links continue on the same level. are therefore arranged on two stacked

This embodiment of the invention was shown only on parallel planes that endeavor to be borrowed as an example, since they are one of the simplest ways to approach each other when the belt is tensioned and are easily understandable, as shown schematically in FIG G. 11 shown,
represents the basic idea of the invention. In this case, each main link becomes a gate

Of course, the main links of the sion stress can and it is subject Band also other practical embodiments of elastic deformations caused by a reaction accept and also the intermediate links 30 bring about return force, which has the tendency to and to bring their connection with the adjacent band back to the rest position (Fig. 10). Main links, being the scope of the invention, if during manufacture of each main link

is not left thereby. a bias is imparted, namely by

In particular, the main links can screw-a permanent deformation in the opposite direction shaped from wire, e.g. B. in the form of multiple 35 direction, a perfect fit Be wound screw turns, the left-handed 6 of the adjacent main links in the rest position (Fig. 2) and right-hand 7 (Fig. 3). It reaches with the connecting pins prevented from doing so stand from being arranged alternately above and below, randomly from their respective seats ten sections, each of which one or more slide out. Another group of Windings with round or oval or similar 40 embodiments of the invention can be the main Cross-section or a cross-section in the form of a member 23, for example, from a profile piece has a figure of eight, as produced for example in FIG. 4 with a cross section similar to a figure of eight and 5, where the main links 8 and 9 become right, consisting of two small tubes 24 and 25 /

are common and left-handed. In other practical cases, which are interconnected by a web part 23 Embodiments of the invention may include the main 45 connected to the tubes in resting members in the form of multiple screw turns in a position aligned parallel to one another gen with an oval cross-section, and holds. The intermediate members 26 are, for example, suitable 10 right-hand and 11 left-hand (Fig. 6) have small plates (Fig. 15) that are on the same or they can have a cross-section in the shape of one side or two parallel pins 27 and 28 have elongated eight, right-handed 12 50 from a simple metallic round material, for. B. or left-handed 13 (FIG. 7), which is twisted. consist of a round rod 29 (FIG. 16), which is U-shaped

In all of the cases shown in FIGS. 2 to 7, the ends are bent and further inwards the helical main links are each curved with the two bent ends facing each other the adjacent main links by clinging to incisions that can laterally in one or more turns of each main 55 and small tubes 24 and 25 are formed, is divided into the spaces between the win- Also in this case the intermediate links are 26 fertilize the neighboring main links. The (Fig. 13) in a double alternating manner Connection is secured by short pins 14 (Fig. 8), both in the direction of the width of the bar, those with a slight intermediate vault as well as in the direction of its strength, with the Exercise are provided that the unintentional Aus 60 main members 23 are forced to move away prevent, if necessary, to two and two, as in F i g. 14, showing one torsion with one another connected, for example in FIG. 9 subject to stress.

shown, where in this case an intermediate member 15. This case too was mainly to the

is formed, which is presented in the form of a U-shaped bracket purpose, the informative thought of the is designed and has a pair of pins that simplify the invention, taking it for granted The ends of the same main link can be introduced, the main links after different ones to produce it with the two adjacent main link embodiments, which, however, always to connect to that which fall on the opposite in the same scope of the invention.

Some of these embodiments are shown in FIGS. 17-21. In Fig. 17 this becomes Main link 30 formed from a small helix, the turns of which lie against one another and in are squeezed together in the middle and expand at the ends into two parallel tubes.

In Fig. 18, the main link consists of two small parallel tubes 31 and 32 which run along a Generating cut open and connected to one another by a web part 33 with a double-T-shaped cross-section are.

The main link visible in FIG. 19 is formed by two profile parts with an approximately S-shaped cross section 34 and 35 are formed, the radius of curvature smaller than one another in the longitudinal direction at the level of the eyelet are ticked together. The in Fig. The main link shown in FIG. 20 consists of two tubes 36 and 37, which are open along a generatrix and at the joint of opposing web parts with the brackets 38 are connected to one another.

The main link shown in Figure 21 is achieved by cutting and punching and consists of a small plate 39, which alternates with on the one and the other side bent over strips 40 and 41 is provided to oppositely arranged eyelets to form whose alignment axes are parallel to each other.

It will be apparent that numerous other embodiments of the main members can be provided can, be it in the case where the connection between the adjacent main members is by interlocking is achieved, the tape being given the surface appearance of a fabric, be it that the adjacent main links are simple be arranged side by side in the rest position. In all cases, the elastic band can Surface treatment to achieve decorative effects are exposed directly to the Main links that make it up are attached, for example by diamond treatment or in a different way. Or the belt can be fitted with a series of cover telescopic links which can slide on each other, as shown for example in Fig. 22, where both the inner elements 42 as well as the outer elements 43 on each at least one main link of the stretchable Tape are anchored by suitable means.

In other embodiments, the cover telescopic members be sleeve-like, so that they completely the stretchable band in this way enclose or include that is no longer visible from the outside in this way.

The advantages obtained by using the tape of the invention are due to the fact that the tape of the invention has both the properties of great extensibility and soft maintains elasticity characteristic of an elastic fabric and high Has service life and functional reliability as they fit a stretchable metal band, with these properties are already characteristic of the tape described in the introductory part of the description is mentioned, as well as has new, particularly advantageous features, such as the possibility of To achieve special decorative and aesthetic effects of the visible surface, a good one Presentation and protection of the ends of the main links that form the flanks of the belt, and in front of especially the special feature of maintaining the flat shape of the surface on which the axes of symmetry the main links lie.

Another very particularly important advantage that comes with the use of the tape according to the invention is achieved is in the simplicity of disassembling the main links that make up what it is is particularly favorable, for example, in the case in which the band is a bracelet for a wristwatch to represent, the length of which must be adapted to the wrist of the wearer.

Another advantage arises from the possibility of changing the dimensions both in terms of width and The strength of the band can be reduced considerably, which makes it possible with these expandable bracelets for producing women's wristwatches.

Claims (8)

Patent claims: 1. Elastically stretchable metal band, consisting of transverse to the longitudinal axis of the band Main links with the adjacent main links at their ends from the longitudinal edges of the band each in a band plane both near the top of the band and near it The underside are connected by articulated intermediate links that are offset from one another, characterized in that not only, in a known manner, the but also the intermediate links arranged in a belt plane are offset from one another are. 2. Metal band according to claim 1, characterized in that the main links of the band consist of thin rectangular plates (1), which are connected by intermediate links (2, 3, 4, 5) at the height of the four corners with the adjacent panels (1) one after the other on the longitudinal edge of the tape and are connected on the other longitudinal edge of the tape when proceeding along the perimeter of the panels is (Fig. 1). 3. Metal strip according to claim 1, characterized in that the main links in both The direction of a broad side of the belt and also in the direction of a longitudinal edge of the belt are alternating are connected on their one and on their other end face, with the neighboring Main links rest against one another in the rest position of the belt and by the action of the Torsional stresses are deformable when the band is stretched. 4. Metal band according to claim 1, characterized in that each main link of the band of two parallel lying in the rest position, connected to one another by a web part (23) Tubes (24, 25) consists (Fig. 13, 14). 5. Metal band according to claim 1, characterized in that the main links of the band are helically wound from wire and z. B. oval or similar cross-section (10, 11) or have a cross-section in the shape of a figure eight (6, 7, 8, 9, 12, 13), the turns Lay in the spaces between the turns of the adjacent main links and are coupled to them at double alternating connection points, be it on one Broad side of the tape, be it seen on a longitudinal edge of the tape (FIGS. 2 to 7). 6. Metal strip according to claims 1 and 5, 009 534/84 characterized in that the intermediate links consist of short, against slipping out of the Main links secured pins (14, 15) exist between the interlocking Turns of the adjacent wire links are inserted (Fig. 8). 7. Metal strip according to claims 1 and 5, characterized in that the intermediate links 10 consist of U-shaped Bügehi (15), the two pins each in adjacent main links of engage the longitudinal side edges of the tape (Fig. 9). 8. Metal strip according to claims 1 to 7, characterized in that on the main links of the tape cover telescopic members (42, 43) are attached (Fig. 22). For this purpose 2 sheets of drawings