Musical string
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- ZDENKA INFELD ASSET MANAGEMENT GMBH
- Filing Date
- 2024-08-30
- Publication Date
- 2026-07-08
Smart Images

Figure EP2024074291_06032025_PF_FP_ABST
Abstract
Description
[0001] musical string
[0002] The invention relates to a musical string according to the preamble of patent claim 1.
[0003] Most known musical strings exhibit essentially homogeneous mechanical properties across their length in the playing range. These are mounted on musical instruments, such as violins or guitars, and serve to produce sound on these very instruments. The musical string is stimulated by a musician, for example, strumming or plucking. To stimulate vibrations of different frequencies, and thus to produce different tones and timbres, the string is clamped off with a shortened length either with the fingers or a mechanical clamp. This creates a shortened string with a higher vibration frequency, since every vibrating string has a natural frequency that depends solely on its mechanical properties. Plucking or strumming serves to supply energy and determines the shape of the vibrations generated.
[0004] It has proven disadvantageous that with shorter fretted string lengths, the sound of the string differs significantly from the sound of the same string with a longer vibrating string length. As the vibrating or fretted string length decreases, musical strings generally take on an increasingly closed or constricted sound character. As a result, musical instruments in different frequency ranges, or in musical terms, different registers, exhibit different sound characteristics, as well as different handling characteristics and a different playing feel for the musician.Since it is often possible to excite the same note on different strings on string instruments – and therefore also with different lengths of the respective string – the musical instrument can have a different sound character in the same frequency range, depending on which musical string and in which position (position of the hand on the fingerboard) the sound was produced. This can have a negative impact on the sound character of the musical instrument in question, as well as on the interpretation or reproduction of a piece of music. Furthermore, it has been shown that virtuosos in particular require special or unusual musical strings in order to be able to develop their full potential, and that the tonal or playing technical possibilities of available musical strings are often inadequate. Such musicians could play even better or even more effectively.play in a more differentiated way, but are often limited by the fact that conventional musical strings simply do not allow or physically do not allow certain musical expressions.
[0005] As already mentioned above, musical strings vibrate at a natural frequency, which depends on the length of the string when vibrated. This natural frequency also depends on the mass of the string, which is why most musical strings, in addition to a supporting core, have at least one winding layer wound around the core. This winding layer, which primarily serves to increase the mass per unit area to a specified value, also directly influences the sound characteristics of a musical string. The winding layer can influence the overtone behavior as well as the damping of the musical string.
[0006] The object of the invention is therefore to provide a musical string of the type mentioned at the outset, with which the disadvantages mentioned can be avoided and which has a large number of possibilities for sound adjustment.
[0007] According to the invention, this is achieved by the features of patent claim 1.
[0008] This provides expanded possibilities for adjusting or specifying the sound and handling of a musical string.
[0009] This allows the creation of a musical string with enhanced tonal properties and capabilities compared to conventional strings with a winding layer that maintains a substantially constant shape along its entire length. This allows the handling, response, and lifespan of a musical string to be influenced over a wide range.
[0010] This allows the creation of musical strings with special properties. Depending on the specific ratio of the first width to the second width or the first height to the second height, as well as preferably the shape of the side edges, it is possible to create musical strings that are particularly well-suited to being stimulated by bowing or plucking. This makes it possible to create either particularly balanced musical strings or very specialized musical strings for special applications that require specific properties to enable the musician to achieve the highest virtuosity in their musical expression.
[0011] This makes it possible to create musical strings that have very similar sound characteristics and very similar properties when played with different lengths, and therefore with different fundamental tones.
[0012] The subclaims relate to further advantageous embodiments of the invention.
[0013] The invention will be described in more detail with reference to the accompanying drawings, in which only preferred embodiments are shown by way of example. In the drawings:
[0014] Fig. 1 is an exemplary detailed representation of a first embodiment of a musical string in question in a sectional view;
[0015] Fig. 2 is a plan view of a first preferred embodiment of a first winding element;
[0016] Fig. 3 is a plan view of a second preferred embodiment of a first winding element;
[0017] Fig. 4 is a plan view of a third preferred embodiment of a first winding element;
[0018] Fig. 5 is a plan view of a fourth preferred embodiment of a first winding element; and
[0019] Fig. 6 is an exemplary detailed representation of a second embodiment of a musical string in question in a sectional view.
[0020] Fig. 1 shows a sectional view of a section of a musical string 1, in particular for string and / or plucked instruments, comprising at least one supporting string core 2 and at least one first winding element 3, which first winding element 3 is wound in the form of a helical line around the string core 2 and has a cross-section with a width 5, 7 and a height 8, wherein the height 8 is arranged normal to the string core, wherein the first winding element 3 - viewed along its helical course - has a first width 5 and a first height 8 at a first winding element location 4 and a second width 7 and a second height 16 at a second winding element location 6, and that the first width 5 is greater than the second width 7 and / or that the first height 8 is greater than the second height 16.
[0021] This provides expanded possibilities for adjusting or specifying the sound and handling of a musical string 1.
[0022] This allows the creation of a musical string 1 that offers enhanced tonal properties and capabilities compared to conventional musical strings with a winding layer that maintains a substantially constant shape over its entire length. This allows the handling, response, and service life of a musical string 1 to be influenced over a wide range.
[0023] This allows the creation of musical strings 1 with special properties. Depending on the specific ratio of the first width to the second width or the first height to the second height, as well as preferably also the shape of the side edges 10, 13, it is possible to create musical strings 1 that are particularly suitable for being stimulated by stroking or plucking.
[0024] This makes it possible to create either particularly balanced musical strings 1 or very special musical strings 1 for special applications where special properties are required to enable the musician to achieve the highest virtuosity of his musical expression.
[0025] This makes it possible, above all, to create musical strings 1 that exhibit very similar tonal characteristics and very similar bowing properties at different lengths, and therefore at different fundamental pitches. Different heights 8, 16 have proven particularly advantageous when the first winding layer is enclosed by another winding layer. The free spaces formed by the areas with different heights 8, 16 serve as a reservoir for a damping agent 14.
[0026] The embodiments and detailed views shown in Figures 1, 2, 3, 4, and 5 are simplified representations. The proportions do not necessarily correspond to the intended actual proportions. For better understanding, individual parts may be shown in a greatly enlarged view or with significantly exaggerated proportions. Furthermore, parts are shown in cross-sectional views in Figure 1. For better clarity, the helical contours of the first winding element 3 have been omitted.
[0027] A preferred area of application for such musical strings 1 are instruments of the violin family, hence the violin, the viola, the violoncello, and the bass or double bass. Other preferred instruments for using musical strings 1 according to the invention are the viola da gamba and the viola d'amore. Furthermore, they can also be advantageously used for guitars. Such musical strings 1 according to the invention can preferably be provided for all bowed and / or plucked string instruments in which the vibrating length of the musical string 1 is varied to generate sounds with different fundamental vibrations.
[0028] Musical strings 1 according to the invention are provided for generating tone-producing vibrations, wherein a specific type of musical string 1 is intended for use with a specific type of musical instrument, and further comprise a tuning pitch and a so-called tuning weight as features, wherein the tuning pitch indicates the fundamental pitch with which a partial length of the musical string 1 - within the total length of the musical string 1 between its end regions - of the length of the scale of the specific type of musical instrument vibrates when the musical string 1 is loaded with the tuning weight, is therefore tensioned, and has been excited to vibrate. In this technical field, the term "tuning weight" refers to the force with which the musical string 1 is to be tensioned. Another term for the tuning weight is string tension force. Musical strings 1 according to the invention comprise a string core 2, which is provided and designed toto absorb the tension to which the musical string 1 is subjected when strung on a musical instrument. The string core 2 is therefore load-bearing. The string core 2 comprises, in particular, a rope and / or a wire and / or is designed as a composite core. Preferably, the string core 2 comprises at least one plastic thread and / or a wire rope and / or a natural gut and / or an artificial gut and / or a plastic band and / or a plastic flat wire and / or a steel wire and / or a steel rope.
[0029] The musical string 1 in question preferably has a shape in the tensioned state which can be enclosed by a substantially circular-cylindrical envelope.
[0030] Musical strings 1 for fundamental tones with lower frequencies, preferably less than 700 Hz, in particular less than 500 Hz, generally have windings or at least a first winding layer in order to increase the mass per unit area of the musical string 1. The fundamental frequency at which a musical string 1 vibrates depends on the vibrating length or scale of the respective musical string 1, the force with which the respective musical string 1 is tensioned, and the mass per unit area of the musical string 1. Preferably, the musical string 1 has at least a first winding layer, which is formed by at least one first winding element 3, wherein the at least one first winding element 3 is wound helically around the string core 2. The first winding element 3 therefore does not necessarily have to be wound directly or immediately onto the string core 2, but merely has to have the same axis of rotation as the string core.Several winding elements can also be wound next to each other in the form of a multi-start helical line and together form the first winding layer.
[0031] The musical string preferably has an additional winding layer arranged between the first winding element 3 and the string core 2. This additional winding layer can also be referred to as the central winding layer. The first winding layer according to the invention can also be referred to as the outer winding layer. As shown in Fig. 1, the musical string 1 preferably further comprises a damping means 14, which at least indirectly encloses or encompasses the string core 2. In particular, the damping means 14 is arranged directly on the string core 2. The damping means 14 is in mechanical contact with the next winding element, which in Fig. 1 is the first winding element 3.
[0032] According to a first preferred variant, the first winding element 3 and / or a further winding element comprises a metal selected from the group: aluminum, magnesium, iron, chromium, nickel, silicon, silver, gold, platinum, rhodium, ruthenium, rhenium, palladium, osmium, copper, tungsten, tantalum, manganese, molybdenum, wherein each of the substances mentioned can be provided as a pure substance in the technical sense, but also as a component of an alloy.Musical strings 1 have proven to be particularly advantageous in which the at least one winding layer 3 is formed from at least one alloy selected from the group: steel, aluminum-magnesium alloys, aluminum-magnesium-manganese alloys, silver-copper alloys, silver-platinum alloys, silver-rhodium alloys, silver-palladium alloys, iron-chromium-nickel-silicon-aluminum alloys, beryllium alloy, phosphor bronze, iron-aluminum-chromium alloys, iron-chromium-aluminum alloys, aluminum-iron-chromium alloys, aluminum-silicon-chromium alloys. Steel is preferably steel comprising alloying components selected from the group: carbon, chromium, nickel, molybdenum, vanadium, manganese, tungsten, with particular preference being given to carbon steels (C content of 0.01% to 0.03%) and chromium-nickel steels (Cr content of 17% to 20%, Ni content of 8% to 10%).Furthermore, it can be provided that the at least one winding layer 3 has a surface coating, wherein a coating with at least one metal, in particular brass, tin, nickel, and / or a plastic, in particular a polymer, can be provided. Preferably, it can be provided that a predeterminable number of coatings are arranged one above the other.
[0033] According to a second preferred variant, the first winding element 3 comprises a plastic selected from the group: polymers and / or aramid and / or PEK and / or PAEK and / or PEEK and / or PBT and / or polyester and / or nylon and / or polyethylene and / or PET and / or PEET and / or PES and / or PE and / or PP and / or POM and / or PTFE and / or PVDF and / or PVDC and / or HPPE and / or PA and / or PVC.
[0034] The first winding element 3 has a cross-section with a width 5, 7 and a height 8. The height 8 is arranged perpendicular to the string core 2 and is to be measured. The width 5, 7 is the distance between the respective lateral ends or corners of the side edges 10, 13 of the first winding element 3 at the respective location. The width 5, 7 therefore corresponds to the measurement result of the respective location using a caliper. The same preferably also applies to the heights 8, 16. The height 8, 16 is the distance between an end facing the string core 2 and an end facing away from the string core 2 of the cross-section of the first winding element 3.
[0035] The first winding element 3 can have different cross-sectional shapes. It is particularly preferred that the cross section of the first winding element 3 essentially has the shape of a rectangle, a parallelogram, a circle, or an ellipse. Both rectangles and parallelograms preferably also include cross sections with rounded corners and, in particular, rounded side edges 10, 13.
[0036] The first winding element 3 is wound around the string core 2 in the form of a helix. Another term for "helix" is "helical."
[0037] It is preferably provided that the first winding element 3 - viewed along its helical course - has a first width 5 at a first winding element location 4 and a second width 7 at a second winding element location 6, and that the first width 5 is greater than the second width 7. In addition or alternatively, it is provided that the first winding element 3 has a first height 8 at the first winding element location 4 and a second height 16 at the second winding element location 6, and that the first height 8 is greater than the second height 16. Details of the present invention are explained with reference to these two winding element locations 4, 6 and the two widths 5, 7 or the two heights 8, 16. In particular, however, the first winding element 3 has a predeterminable plurality of winding element locations 4, 6 with successive different widths 5, 7 and / or heights 8, 16.
[0038] Fig. 1 shows a sectional view of a part of a musical string 1, wherein all cut parts of the first winding element 3 have different widths 5, 7. Fig. 6 shows a sectional view of a part of a musical string 1, wherein all cut parts of the first winding element 3 have different heights 8, 16. Figs. 2 and 3 each show different embodiments of a first winding element 3 in a state before it is applied to the string core 2. Figs. 2 and 3 also essentially correspond to a recording of a first winding element 3, wherein the musical string 1 rotates in front of a camera for recording purposes.
[0039] Each location or each point of the first winding element 3 can be a winding element location 4, 6. However, the winding element locations 4, 6 are preferably so-called reversal points 11, 12 of width 5, 7 and / or height 8, 16. The reversal point 11, 12 is a point on a curve of the first winding element 3, from which a previously increasing width and / or height decreases again or a decreasing width and / or height increases again. This is preferably independent of the shape of the curve. In particular, in mathematics, a reversal point 11, 12 is a point on a curve or function from which a previously increasing amplitude decreases again or a decreasing amplitude increases again. In other words: the differential or the derivative of the curve is zero at the reversal points. Particularly preferably, the first winding element does not have a constant width and / or constant height.
[0040] At a first type of reversal point 11, 12 of width 5, 7, a previously increasing width 5, 7 decreases again. Another name for this first type of reversal point 11, 12 is local width maximum. At a second type of reversal point 11, 12 of width 5, 7, a previously decreasing width 5, 7 increases again. Another name for this second type of reversal point 11, 12 is local width minimum. This principle also applies to the changing heights 8, 16.
[0041] The first winding element 3 can have different shapes. The shape of a winding element 3 is understood to be its outline, as shown in Figs. 2, 3, 4, and 5. In principle, a variety of shapes are possible. The first winding element 3 has a shape that can be characterized by various variables. These variables are primarily:
[0042] - at least one ratio of the different widths 5, 7 to each other; and / or
[0043] - at least one distance 9 between two consecutive reversal points 11, 12 of width 5, 7, and / or
[0044] - at least one ratio of the different heights 8, 16 to each other; and / or
[0045] - at least one distance 9 between two consecutive reversal points 11 , 12 of the heights 8, 16 and / or
[0046] - the shape of the transitions between the winding element positions 4, 6.
[0047] Below we will discuss these variables individually.
[0048] In particular, it is provided that the first width 5 and / or the first height 8 is at least 100.1% to 150%, in particular at least 101% to 130%, preferably 103% to 110%, of the second width 7 and / or the second height 16. It is therefore preferably provided that the first width 5 is at least 100.1% to 150%, in particular at least 101% to 130%, preferably 103% to 110%, of the second width 7. It is therefore preferably further provided that the first height 8 is at least 100.1% to 150%, in particular at least 101% to 130%, preferably 103% to 110%, of the second height 16. This makes it possible to ensure that the first winding element 3 has sufficiently high mechanical strength and to support the achievement of the desired acoustic effect.The partial differences in mass over the length of the first winding element 3 as well as the openings and the mutual mechanical contacts of the parts of the winding element 3 that partially adjoin one another on the sides have a direct influence on the damping and the overtone characteristics of the musical string.
[0049] The percentages refer to the respective dimensions at the position of the first width 5 and the second width 7 and / or the first height 8 and the second height 16, but not to the difference between the two widths 5, 7 or the two heights 8, 16. For example, if the second width 7 is 0.6 mm and the first width 5 is 0.66 mm, the first width 5 is 110% of the second width 7, or the second width 7 has been increased by 10%.
[0050] Between two consecutive reversal points of width 5, 7 or height 8, 16, there is a distance 9. These reversal points of width 5, 7 and / or height 8, 16, or the winding element locations 4, 6, follow one another along the helical or helix-shaped course. According to the preferred embodiments, this distance 9 - on the winding element
[0051] - greater than 1 mm and less than 5000 mm. In particular, this distance is between 1.5 mm and 50 mm.
[0052] This distance 9 has a direct influence on how the variable sound characteristics are distributed on the musical string, or rather, how transitions between different sound characteristics are formed. Thus, a distance 9 of a few millimeters—at least over a partial length of the musical string 1—leads to
[0053] - results in this section having relatively homogeneous sound characteristics. Distances of more than 30 mm, preferably more than 50 mm, in particular more than 100 mm, however, can lead to sound characteristics that vary, particularly slightly, across this partial length section of the musical string 1.
[0054] The features of the two preferred embodiments described below preferably do not relate to the entire length of the first winding element 3 or the entire length of the musical string 1, but rather to a predeterminable region of the musical string 1. According to a first preferred embodiment of this distance 9, the distance 9 between two consecutive reversal points 11, 12 of the width 5, 7 and / or the height 8, 16 is substantially constant. In this way, very homogeneous sub-regions of the musical string 1 can be formed. As a result, a specific acoustic characteristic can be achieved for a specific section of the musical string 1.
[0055] According to a second preferred embodiment of this distance 9, the distance 9 increases between two consecutive reversal points 11, 12 of width 5, 7 and / or height 8, 16. Preferably, the distance 9 increases substantially linearly or exponentially. This allows for a smooth transition of the acoustic properties of a musical string 1. This allows for a targeted, different behavior of the musical string 1 for differently picked notes.
[0056] The transitions between the reversal points 11, 12 of the width 5, 7 and / or the height 8, 16 or the winding element locations 4, 6 formed in this way can have different shapes. The first winding element 3 has a first side edge 10 and a second side edge 13. The second side edge 13 is arranged opposite the first side edge 10. The side edges form lateral end regions of the first winding element 3. The first and / or second side edges 10, 13 have the corresponding shape. The actual shape is the shape of the first and / or second side edges 10, 13 and is shown in the plan view of the first winding element 3, see Figs. 2 and 3. It is preferably provided that the second side edge 13 - along the helical course - is essentially mirror-symmetrical to the first side edge 10. Therefore, only the first side edge 10 is explained below, whereby this is preferably applied mirror-symmetrically to the second side edge 13.
[0057] As already explained, the first side edge 10 can have any shape, in particular a two-dimensional shape. This shape preferably has no undercuts.
[0058] According to the preferred embodiments, the first side edge 10 follows a predeterminable first function along the helical path. This first function has a predeterminable plurality of consecutive reversal points. Particularly preferably, the first winding element does not have a constant width and / or constant height.
[0059] A function is, in particular, a mathematical function. Particularly preferably, the first function is essentially a periodic function.
[0060] Fig. 3 shows a first winding element 3 with a first and second side edge 10, 13, which each follow a periodic oscillation which has essentially straight and parallel side regions and rounded connecting lines.
[0061] Fig. 2 shows a first winding element 3 with first and second side edges 10, 13, which exhibit a non-periodic curve. Fig. 2 shows an actual curve of the two side edges 10, 13, which at first glance appears to be sinusoidal, but exhibits non-periodic deviations from a sinusoidal curve. Such deviations can arise, for example, during production.
[0062] Particularly preferably, the first function comprises a sine function and / or a rectangular function and / or a semicircular arc function and / or a triangular function. First winding elements designed in this way are particularly easy to plan and control, since the basic mechanical properties of these functions are known and they are comparatively easy to manufacture. However, their effect on the musical string 1 is not yet directly apparent from their layout or the course of the side edges 10, 13.
[0063] Fig. 2 further shows an adjacent winding of the respective first winding element 3, wherein gaps 20 are formed between the two parts of the first winding element 3. The gaps 20 are formed between immediately adjacent windings. These gaps 20 or free spaces have proven advantageous because they accommodate or can accommodate damping means 14. This represents a reservoir for damping means 14. The damping means 14 is therefore preferably arranged in the gap 20. In particular, it has proven advantageous if the gaps 20 are variably distributed over the longitudinal extent of the musical string 1 and its circumference.
[0064] The accommodation of damping means 14 in gaps 20 between the individual windings of the first winding element 3 is also shown in Fig. 1. For illustrative purposes, the gaps 20 are shown on one side in a state in which no damping means 14 is arranged therein. On the other side, a damping means 14 is arranged in each of the gaps 20. The gaps 20 each have different widths. Due to capillary lift, the damping means extends further into the respective gap 20, the narrower this gap 20 is.
[0065] Fig. 4 shows a third preferred embodiment. The first and second side edges 10, 13 have the shape of a triangular function, with the second side edge 10 essentially being a mirror image of the first side edge. As is also preferred with other configurations of the side edges 10, 13, the "corners" are rounded.
[0066] Fig. 5 shows a further embodiment. The side edges 10, 13 have an ascending profile over a certain area. Preferably, the side edges 10, 13 have a subsequent descending area and essentially follow a triangular function. However, the side edges 10, 13 do not run linearly but are wavy. This corresponds to a triangular function superimposed by a sine function, wherein the wavelength of the sine oscillations is significantly shorter than the wavelength of the preferred triangular oscillation. In particular, the wavelength of the triangular function is at least 10 times, in particular 20 times, longer than the wavelength of the superimposed function.
[0067] The following are principles for understanding and interpreting the disclosure in question.
[0068] Characteristics are usually introduced with the indefinite article "ein, eine, eines, einer." Therefore, unless the context indicates otherwise, "ein, eine, eines, einer" is not to be understood as a numerical term. "Substantially" in conjunction with a numerical value includes a tolerance of ± 10% around the specified numerical value, unless the context indicates otherwise.
[0069] For ranges of values, the endpoints are included unless the context indicates otherwise.
Claims
PATENT CLAIMS 1. Musical string (1), in particular for stringed and / or plucked instruments, comprising at least one supporting string core (2) and at least one first winding element (3), which first winding element (3) is wound around the string core (2) in the form of a helical line and has a cross-section with a width (5, 7) and a height (8, 16), wherein the height (8, 16) is arranged normal to the string core (2), characterized in that the first winding element (3) - viewed along its helical course - has a first width (5) and a first height (8) at a first winding element location (4) and a second width (7) and a second height (16) at a second winding element location (6), and that the first width (5) is greater than the second width (7) and / or that the first height (8) is greater than the second height (16).
2. Musical string (1) according to claim 1, characterized in that the first width (5) and / or the first height (8) is at least 100.1% to 150%, in particular at least 101% to 130%, preferably 103% to 110%, of the second width (7) and / or the second height (16).
3. Musical string (1) according to claim 1 or 2, characterized in that the first winding element location (4) is a first reversal point (11) of the width (5, 7) and / or the height (8, 16), and that the second winding element location (6) is a second reversal point (12) of the width (5, 7) and / or the height (8, 16), wherein the reversal point (11, 12) is a point in a course of the first winding element (3) from which a previously increasing width and / or height decreases again or a decreasing width and / or height increases again.
4. Musical string (1) according to claim 3, characterized in that the first winding element (3) has a predeterminable plurality of reversal points (11, 12) with successive different widths (5, 7) and / or heights (8, 16) has.
5. Musical string (1) according to claim 4, characterized in that - along the helical course - between two successive reversal points (11, 12) there is a distance (9), which distance (9) is greater than 1 mm and less than 5000 mm, in particular between 1.5 mm and 50 mm.
6. Musical string (1) according to claim 5, characterized in that the distance (9) is substantially constant.
7. Musical string (1) according to claim 5 or 6, characterized in that the distance (9) is increasing, in particular substantially linearly.
8. Musical string (1) according to one of claims 1 to 7, characterized in that the first winding element (3) has a first side edge (10), and that the first side edge (10) - along the helical course - follows a predeterminable first function, which first function has a predeterminable plurality of successive reversal points.
9. Musical string (1) according to claim 8, characterized in that the first function is a periodic function, in particular a sine function and / or a rectangular function and / or a semicircular arc function and / or a triangular function.
10. Musical string (1) according to one of claims 8 or 9, characterized in that the first winding element (3) has a second side edge (13) opposite the first side edge (10), and that the second side edge (13) - along the helical course - is substantially mirror-symmetrical to the first side edge (10).
11. Musical string (1) according to one of claims 1 to 10, characterized in that the musical string (1) has a damping means (14), which damping means (14) preferably at least indirectly encloses the string core (2), in particular is arranged directly on the string core (2).
12. Musical string (1) according to claim 11, characterized in that at least one gap (20) is formed between directly adjacent turns of the first winding element (3), and in that the damping means (14) is arranged in the gap (20).