Patent Application
20200362512
The present invention relates to a wire which can be used in particular in a stranded wire. The present invention relates further to a stranded wire having at least one such wire.
Known wires have substantially a round, mostly circular, cross-section. Wires with a round cross-section give rise to some restrictions in the production of a stranded wire s using such wires. Wires with a round or circular cross-section can be processed by means of a stamping machine, with a symmetrical or regular arrangement of the wires and inlays, only to a stranded wire that is hexagonal in cross-section. In the case of an asymmetrical or irregular arrangement of the wires and the inlays, production yields a tapered assembly, that is to say the cross-section of the stranded wire becomes increasingly constricted.
Accordingly, there is a need for a wire with which, inter alia, the above-described restrictions in the production of a stranded wire can be eliminated.
According to a first aspect, a wire is provided. The wire, when viewed in cross-section, has at least one first portion and at least one second portion which are interconnected by a third portion in which the wire has a reduced cross-section.
The third portion can be arranged between the first portion and the second portion. The third portion can form the central portion of the wire. The first portion, the second portion and the third portion can be formed in one piece.
The wire can have a curved shell surface. The shell surface can be curved in the third portion in the opposite direction to its curve in the first portion and in the second portion. The shell surface can be curved concavely, for example, in the third portion. In the first portion and/or in the second portion, the shell surface can be curved convexly. The shell surface of the wire can have at least one indentation which reduces the cross-section of the wire in the direction of the third portion. The indentation can be curved convexly at least in part in the first and/or in the second portion. There can be provided, for example, two indentations which reduce the cross-section of the wire in the third portion from two directions or from two sides. The two indentations can face one another. The third portion can substantially be in the form of a connecting web between the first portion and the second portion.
The first portion and the second portion, when viewed in cross-section, can be substantially round. The first portion and the second portion can be substantially equal in size. The wire, when viewed in cross-section, can substantially have the shape of an 8 or the shape of a pair of spectacles. The first portion and the second portion can have a substantially circular cross-section at least in part.
According to a second aspect, a stranded wire is provided. The stranded wire has at least one wire with the above-described cross-section. The stranded wire can also have a plurality of wires with the above-described cross-section.
With the wires which have the above-described cross-section, stranded wires that have a round cross-section can be produced.
The wires can be produced from multiple materials. Wires produced from a first material and wires produced from a second material can be used for a stranded wire. The stranded wire can of course also have wires that have been produced from three or more different materials.
The stranded wire can have at least one inlay element. The at least one inlay element can be arranged in a predetermined position in the stranded wire. The at least one inlay element can be arranged centrally in the stranded wire. The at least one inlay element can form the midpoint of the stranded wire. The predetermined position of the at least one inlay element can be different from the above-mentioned position of the inlay element in the midpoint of the stranded wire. The at least one inlay element can be arranged in the stranded wire in such a manner that the stranded wire, in cross-section, has an asymmetrical or irregular structure. The at least one inlay element can have a round cross-section. Furthermore, the at least one inlay element can also have a circular cross-section.
The stranded wire can have at least one wire which is arranged on a radius around the center of the stranded wire. The wires on this radius can, for example, be arranged around at least one inlay element. The inlay element can form the midpoint of the stranded wire and be surrounded by the wires arranged on the radius.
Furthermore, further wires can be arranged between the midpoint of the stranded wire and the wires arranged on the radius. Wires that extend substantially in a radial direction can be provided between the midpoint of the stranded wire and the wires arranged on the radius. Inlay elements can further be arranged between the midpoint of the stranded wire and the wires arranged on the radius. At least one wire that is produced from a different material than the wires on the radius can be arranged between the midpoint of the stranded wire and the wires arranged on the radius. Some of the wires arranged on the radius can further be separated from one another by the inlay elements arranged on the radius.
Each wire can be arranged within the stranded wire in a predetermined position and/or location. Owing to the cross-section of the wires, the wires are able to retain their predetermined position and/or location in the stranded wire during production of the stranded wire.
The wires can be so arranged in the stranded wire that they extend substantially in a radial direction. The stranded wire can have at least two wires extending parallel to one another. The parallel wires can extend in a radial direction and/or obliquely to an inlay element. The stranded wire can have at least one wire whose first portion is arranged on a first radius and whose second portion is arranged on a second radius around the midpoint of the stranded wire. The first radius and the second radius can be different from one another.
The stranded wire can have at least one wire with the above-described cross-section whose first portion and whose second portion is arranged on a radius around the midpoint of the stranded wire. The first portion, the second portion and the third portion of the wire can lie on a common radius around the midpoint of the stranded wire.
The at least one inlay element can be arranged in such a manner that it holds the wires in their predetermined position and/or location. The at least one inlay element can establish a predetermined distance between at least two adjacent portions of two wires. The stranded wire can have a plurality of inlay elements. The inlay elements can be arranged in such a manner that at least some of the wires extend substantially in a radial direction. The inlay elements can be so positioned in the stranded wire that, in cross-section, an irregular structure of the stranded wire is obtained. For example, the inlay elements, when viewed in cross-section, can be arranged only in a part-region of the stranded wire, while no inlay elements are arranged in the remaining part-regions of the cross-section of the stranded wire. One inlay element of the plurality of inlay elements can form the midpoint of the stranded wire. A single inlay element, which forms the midpoint of the stranded wire, can be provided in the stranded wire.
The wires can be so arranged that the stranded wire is hexagonal in cross-section. The wires can be arranged around the midpoint of the stranded wire in multiple layers which are hexagonal in cross-section.
According to a third aspect, a drawing die for producing a wire having the above-described cross-section is provided. The drawing die has an opening. The opening has at least one projection which reduces the cross-section of the opening in at least one portion.
According to a fourth aspect, a production method for a wire having the above-described cross-section is proposed. A wire is drawn through at least one drawing die. The drawing die has an opening which reduces the cross-section of the wire in at least one portion.
Before the wire is drawn through the drawing die having the opening that reduces the cross-section in a portion, the wire can be drawn through at least one further drawing die. For example, the wire can be drawn through a drawing die which has an opening in the form of a slot. With such an opening, the wire can be drawn into a flat or rod-shaped cross-section. Furthermore, at the beginning of the production method, the wire can also be drawn through a drawing die which converts the wire into a round cross-section.
It will be appreciated that the expressions used herein serve merely to describe individual embodiments and are not to be considered limiting. Unless defined otherwise, all technical and scientific expressions used herein have the meaning that corresponds to the general understanding of the person skilled in the art in the relevant field for the present disclosure; they are not to be interpreted either too broadly or too narrowly. If specialist expressions are used inappropriately herein and thus do not express the technical idea of the present disclosure, they are to be replaced by specialist expressions that provide the person skilled in the art with a correct understanding. The general expressions used herein are to be interpreted on the basis of the definition found in the dictionary or according to the context; too narrow an interpretation is to be avoided.
It will here be understood that expressions such as, for example, “comprise” or “have”, etc. signify the presence of the described features, numbers, operations, actions, components, parts or combinations thereof and do not exclude the presence, or the possible addition, of one or more further features, numbers, operations, actions, components, parts or combinations thereof.
Although expressions such as “first” or “second”, etc. may be used to describe different components, those components are not to be limited to those expressions. The above expressions are merely intended to distinguish one component from the others. For example, a first component may be referred to as a second component without departing from the scope of protection of the present disclosure; likewise, a second component may be referred to as a first component. The expression “and/or” includes both the combination of the plurality of connected objects and each object of that plurality of the described plurality of objects.
If it is stated herein that a component “is connected” to another component, is “associated” therewith or “acts thereon”, this may mean that it is connected directly thereto or acts directly thereon; however, it should be noted that a further component may be located therebetween. If, on the other hand, it is stated that a component is “directly connected” to another component or “acts directly thereon”, this means that further components are not present therebetween.
Specific embodiments of the present disclosure will be described hereinbelow with reference to the accompanying drawings, in which identical components are always provided with the same reference numerals. In the description of the present disclosure, detailed explanations of known associated functions or constructions are not given if they distract unnecessarily from the meaning of the present disclosure; such functions and constructions are, however, comprehensible to the person skilled in the art. The accompanying drawings of the present disclosure serve to illustrate the present disclosure and are not to be interpreted as limiting. The technical idea of the present disclosure is to be interpreted as including, in addition to the accompanying drawings, also all such modifications, changes and variants.
Further objects, features, advantages and possible applications will become apparent from the following description of exemplary embodiments, which are not to be interpreted as limiting, with reference to the accompanying drawings. All the features that are described and/or depicted in the drawings thereby show the subject-matter disclosed herein on their own or in any desired combination, also independently of their grouping in the claims or their dependencies. The dimensions and proportions of the components shown in the figures are not necessarily to scale; they may differ from those shown here in embodiments that are to be implemented. In the figures:
The wire 10 has a curved shell surface MF. The shell surface MF is curved in the third portion 16 in the opposite direction to its curve in the first portion 12 and in the second portion 14. The shell surface MF is curved concavely in part in the third portion 16. In the first portion 12 and in the second portion 14, the shell surface MF is curved convexly in part.
When viewed in an xy-coordinate system, the cross-section of the wire 10 changes along its extent in the x-direction. Starting from the starting point 121 on the shell surface MF of the wire 10, the cross-section of the wire 10 increases, curved in the y-direction, to the apexes 122 and 123. Between the apexes 122 and 123, the first portion 12 of the wire 10 has its largest cross-section, or its greatest extent in the y-direction. Starting from the apexes 122 and 123, the cross-section of the wire 10 in the first portion 12 decreases, curved in the direction towards the third portion 16. In the third portion 16, the wire 10 has its smallest cross-section in the y-direction. Since the shell surface MF of the wire 10 also extends in a curved manner in the third portion 16, the wire 10 has its smallest cross-section in the y-direction in the third portion 16 between the apexes 161 and 162. Starting from the apexes 161 and 162, the cross-section of the wire 10 increases in the second portion 14 again in a curved manner to the apexes 141 and 142 of the curve of the second portion 14. Between the apexes 141 and 142 of the curve of the shell surface MF in the second portion 14, the wire 10 has its largest cross-section in the y-direction in the second portion 14. Starting with the apexes 141 and 142, the cross-section of the wire 10 decreases in the y-direction in the third portion 14 in a curved manner to the end point 143.
The third portion 16 is arranged between the first portion 12 and the second portion 14. The third portion 16 lies on an imaginary straight line through the starting point 121 and the end point 143, which is shown as a broken line in
The above description of the cross-section of the wire 10 can be summarized as follows. Between the apexes 122, 123 and 141, 142 of the curves of the shell surface MF in portions 12 and 14, the wire 10 in each case has an indentation EW1 and EW2, which reduce the cross-section of the wire 10 in the third portion 16. The indentations EW1 and EW2 extend towards one another in the y-direction and reduce the cross-section of the wire 10 in the third portion 16. As a result, the wire 10 has its smallest cross-section in the y-direction in the third portion 16.
The wires 101, 102 and 103 touch one another at the points of contact BS1, BS2 and BS3. The second portion 14 of the wire 101 lies against the first portion 12 of the second wire 102 at the point of contact BS1. The second portion 14 of the wire 102 touches the first portion 12 of the wire 103 at the point of contact BS2. The second portion 14 of the wire 103 contacts the first portion 12 of the wire 101 at the point of contact BS3. The points of contact BS1, BS2 and BS3 between the wires 101, 102 and 103 lie on the radius R around the inlay element 18 which forms the midpoint of the stranded wire 100.
In the following, for reasons of clarity, only some points of contact are marked in the figures. For figures in which radii are depicted, it is to be assumed that points of contact lie on those radii, even if the points of contact are not shown in the corresponding figures.
The wires 101 to 106 extend obliquely radially outwards, starting from the inlay element 18. One of the inlay elements 20, 22, 24, 26, 28, 30 is arranged between two first portions 12 of two adjacent wires 101 to 106. The first portions 12 of the wires 101 to 106 and the inlay elements 20, 22, 24, 26, 28, 30 lie on a common second radius R2 around the inlay element 18. The first portions 12 of the wires 101 to 106 touch the inlay elements 20, 22, 24, 26, 28, 30 at points of contact BSEAE. The points of contact BSEAE lie on the second radius R2. The inlay elements 20, 22, 24, 26, 28, 30 each also touch a second portion 14 of one of the wires 101 to 106 at a point of contact BSZAE. The inlay elements 20, 22, 24, 26, 28, 30 accordingly contribute to enabling the wires 101 to 106 in the stranded wire 110 to be arranged and held in a predetermined position and/or location.
The inlay element 20 is arranged between the wires 101 and 102. The inlay element 22 is arranged between the wires 107 and 108. The inlay elements 20 and 22 are arranged only in a part-region of the cross-section of the stranded wire 130. The stranded wire 130 has an irregular structure. The wires 103 and 106, which extend with their portions 12, 14 and 16 on the radius R2, are arranged between the wires 102 and 104 and 105 and 107, respectively. The mentioned elements touch one another at the points of contact BSR2. The radius R2 runs through the points of contact BSR2.
The wires 103 and 104 extend substantially parallel to one another and in a radial direction. The same is true of the wires 106 and 107. The first portions 12 of the wires 103 and 104 touch one another. The first portions 12 of the wires 106 and 107 also touch one another. The points of contact BSR2 of the first portions 12 of the wires 103, 104, 106 and 107 lie on a second radius R2. The inlay element 20 is arranged between the wires 102 and 103. The inlay element 20 touches the first portion 12 of the wire 102 and the first portion 12 and the second portion 14 of the wire 103. The inlay element 22 is arranged between the wires 107 and 108 and touches the first portion 12 of the wire 108 and the two portions 12 and 14 of the wire 107. The points of contact BSR2 between the inlay element 20 and 22 with the first portion 12 of the wires 102, 103, 107 and 108 lie on the second radius R2.
The wire 106 extends with its portions 12, 14 and 16 on the radius R2. The first portion 12 of the wire 106 touches the first portion 12 and the second portion 14 of the wire 107. The second portion 14 of the wire 106 touches the first portion 12 and the second portion of the wire 105.
The second portions 14 of the wires 101, 102, 103, 104, 105 and 107 touch the inlay element 18 and lie on a first radius R1. The first portions 12 of the wires 101 to 105 and 107 lie on the second radius R2. The wire 106 lies with its portions 12, 14 and 16 likewise on the radius R2, as do the inlay elements 20, 22, 24, 26.
The wire 104 lies with its portions 12, 14 and 16 on the second radius R2. The first portion 12 of the wire 104 lies against the portions 12 and 14 of the wire 103. The second portion 14 of the wire 104 touches the two portions 12 and 14 of the wire 105. The inlay elements 20, 22, 24 are located on the second radius R2 and are arranged between the wires 107, 101, 102 and 103.
The second portions 14 of the wires 101, 102, 103, 105, 106 and 107 lie on the first radius R1 and the second portions 14 lie on the second radius R2. The portions 12 and 14 of the mentioned wires lie on the different radii R1 and R2.
s
The first portions 12 of the wires 101 to 104 and 106, 107, the wire 105 and the inlay elements 20, 22, 24, 26 lie on the second radius R2. The second portions 14 of the wires 101 to 104, 106 and 107 touch the inlay element 18 and lie on the first radius R1, which is different from the radius R2.
The wires 101, 102 and 103 which touch the inlay element 18 also touch one another at the points of contact BS1. The points of contact BS1 lie on a common radius R. The wires 104 to 109 also touch one another at the points of contact BS2, wherein in each case a first portion 12 contacts a second portion 14. Owing to the hexagonal arrangement of the wires 104 to 109, the points of contact BS2 do not lie on a common radius.
The drawing die 302 according to
The drawing die 304 brings the wire into the shape shown in
The wires 10 shown in
Furthermore, as is shown in
With the drawing die shown in
The aspects and features which have been mentioned and described together with one or more of the examples and figures described in detail hereinbefore can further be combined with one or more of the other examples in order to replace a similar feature of the other example or in order additionally to incorporate the feature into the other example.
The description and drawings constitute only the principles of the disclosure. Furthermore, all the examples given here are expressly to serve only for teaching purposes, in order to assist the reader in understanding the principles of the disclosure and the concepts contributed by the inventor(s) to the further development of the art. All statements made herein relating to principles, aspects and examples of the disclosure and also specific exemplary embodiments thereof are to include their correspondences.
Furthermore, the following claims are hereby incorporated into the detailed description, where every claim can itself constitute a separate example. When every claim can itself constitute a separate example, it is to be noted that—although a dependent claim in the claims can relate to a specific combination with one or more other claims—other exemplary embodiments can also include a combination of the dependent claim with the subject-matter of any other dependent or independent claim. These combinations are proposed here, unless it is stated that a specific combination is not intended. Furthermore, features of a claim are also to be included for any other independent claim, even if that claim is not made directly dependent on the independent claim.
The present disclosure is of course not limited in any way to the embodiments described above. On the contrary, many possibilities for modifications thereof will be apparent to an average person skilled in the art, without departing from the underlying idea of the present disclosure as is defined in the accompanying claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2018 200 685.7 | Jan 2018 | EP | regional |
This application filed under 35 U.S.C § 371 is a national phase application of International Application Number PCT/EP2019/050392, filed Jan. 9, 2019, which claims the benefit of German Application No. 10 2018 200 685.7 filed Jan. 17, 2018, the subject matter of which are incorporated herein by reference in their entirety.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2019/050392 | 1/9/2019 | WO | 00 |
