Cable gland

Abstract

In the non-attached state, a contact element for contacting at least one elongate component, in particular a cable, is proposed. The contact element comprises a plurality of first windings, a plurality of second windings that are geometrically different from the first windings, and a passage opening for passing the elongate component through.

Description

Technical Field

[0001] The present invention relates to at least one of the connection contact element equipped with for a cable ground.

Background Art

[0002] Contact elements for ensuring electromagnetic compatibility (EMC) are generally known from the prior art. For example, Patent Document 1 discloses an apparatus for an electromagnetic compatibility arrangement of a cable having contact means with a wound spring element, the windings of the spring element having a substantially straight holding portion that is aligned parallel to the sheath of a through-opening at the mounting position, and the spring element being supported on the sheath or shield of the cable. Patent Document 2 discloses a contact element having an inclined spring. Patent Document 3 discloses an inclined spring as a contact element for ultra-small components. Patent Document 4 discloses a cable ground having a contact spring. Patent Document 5 discloses a cable ground having a contact spring. Patent Document 6 discloses a cable ground having a contact spring. Patent Document 7 discloses a connection device for high-frequency signals.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Patent Document 6

Patent Document 7

Summary of the Invention

Problems to be Solved by the Invention

[0004] Known from the prior art for a cable groundThe contact element has the disadvantage of being designed for only one diameter, or a very limited range of diameters, of the elongate component. Therefore, different contact elements with different inner diameters are used for different elongate component diameters. As a result, many cable glands have to be provided for different elongate component diameters, which is cumbersome and costly. Also, the contact elements known from the prior art have to be adapted to each of the required electromagnetic compatibilities (EMC). The contact element has to be designed to withstand, without damage, the current induced in the shield or the fault current.

[0005] The object of the present invention is to improve the cable gland equipped with In particular, the object of the present invention is to improve the usability and / or compatibility of the contact element. In particular, the object is to accommodate and make contact with many different elongate components having different diameters the cable - to provide a cable gland. In particular, the object of the present invention is to provide a contact element that can reliably make contact with the small diameter of the elongate component and is easy to install A cable ground equipped with To provide. In particular, the object of the present invention is to provide a contact element that can be inserted into a component that is easy to manufacture A cable ground equipped with To provide.

Means for Solving the Problem

[0006] The problem is solved, according to the present invention, by a contact element for contacting at least one elongate component, preferably a cable at least one Contact element having, and the contact element is , (in the non-mounted state), comprising at least a plurality of first windings, a plurality of second windings geometrically different from the first windings, and a passage opening for passing the elongate component , the first diameter d1 of the through-hole is defined by the first winding, the second diameter d2 of the through-hole is defined by the second winding, and the first diameter d1 and the second diameter d2 are different cable grounds Is solved by 。

Brief Description of the Drawings

[0007]

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DETAILED DESCRIPTION OF THE INVENTION

[0008] Preferably, in order to shield or attenuate electromagnetic interference and / or to ensure electromagnetic compatibility in accordance with, for example, IEC62153-4-10:2015+AMD1:2020CSV, a at least one contact element cable ground having is proposed for contacting at least the elongate parts, in particular the cables, in the non-mounted state. The contact element comprises a plurality of first windings, a plurality of second windings geometrically different from the first windings, and a through-passage for passing the elongate part therethrough. The first diameter d1 of the through-hole is defined by the first winding, the second diameter d2 of the through-hole is defined by the second winding, and the first diameter d1 and the second diameter d2 are different 。

[0009] In the context of the present invention, "geometrically different" should be understood in particular to mean that the shapes of the first and second windings do not match when looking at the first and second windings in the circumferential direction of the contact element, respectively. In particular, the radii with respect to the main axis of the contact element are arranged such that the projections of the first and second windings onto a plane that intersects at least each winding and preferably at least the holding part of the winding do not match.

[0010] According to the present invention It is provided that a first diameter d1 of the through-passage is defined by the first winding and a second diameter d2 of the through-passage is defined by the second winding.

[0011] According to the present invention It is provided that the first diameter d1 and the second diameter d2 are different.

[0012] The advantages of differently designed windings that define at least two different diameters at the through-hole are, on the one hand, that only one contact element needs to be provided for elongated parts with different diameters, and on the other hand, when the diameter of the elongated part where a large current conduction is expected is large, or in the case of a plurality of elongated parts, a large number of contacting windings can be applied to the elongated parts. With many identical windings, only one diameter can be defined for the through-hole, so it is impossible to reliably contact elongated parts with different elongated part diameters. Another advantage is that, especially when only a small number of first windings define a small diameter of the through-hole diameter, the second winding provides a sufficient spring wire length, providing a larger flexible area than solutions known from the prior art. For this reason, the spring stiffness can be reduced for small diameters, for example, from about 2 mm to about 6 mm, and the elongated part can be successfully attached to the contact element. Another advantage of the proposed contact element is that only a small number of parts need to be held in stock, especially for attaching different elongated parts. In the proposed contact element, only individual windings define a small diameter for an elongated part with a small elongated part diameter, and the other windings contact the elongated part, so there is an overall sufficient number of windings to conduct current from an elongated part with a large elongated part diameter.

[0013] Another advantage of the present invention is that only any one winding, preferably only the first winding, forms a diameter smaller than that of the second winding. For a small elongated part diameter, for example, from about 2 mm to about 6 mm, the sum of the individual wire diameters of the winding defines the perimeter of the through-hole, so it is necessary to provide a small number of windings. However, when the number of windings is small, the spring stiffness is very large. So, if the number is reduced to a certain extent, the spring becomes too hard to attach to and insert into the part. To reduce the spring stiffness, a second winding is provided that does not extend to the diameter defined especially by the first winding. Advantageously, this increases the spring length, thereby reducing the spring stiffness. This makes it easy to use and change for different diameters of the elongated part.

[0014] The contact element preferably comprises a wire forming a winding. The wire has a wire diameter. In the context of the present invention, the wire diameter is to be understood as the diameter of the wire transverse to the longitudinal extension of the wire forming an individual winding. In one form, the wire is metallic, conductive and preferably elastic.

[0015] The contact element has a passage opening. At least one elongate component is inserted into the proposed contact element, and when passing through the passage opening in particular, the elongate component advantageously contacts the first winding and / or the second winding depending on the diameter of the elongate component or the diameter formed by a plurality of elongate components. Especially when the elongate component has an electromagnetic shield exposed within the contact range, a current can flow from the shield to the contact element or vice versa, causing voltage equalization and in particular enabling the elongate component to be grounded. The safe electrical connection between the elongate components made possible by the contact element ensures electromagnetic compatibility.

[0016] A plurality of first windings define a first diameter d1 of the passage opening in the non-mounted state. A plurality of second windings define a second diameter d2 of the passage opening in the non-mounted state. The first diameter d1 is different from the second diameter d2 in the non-mounted state. Preferably, the second diameter d2 is larger than the first diameter d1 in the non-mounted state. In one form, additional windings, such as a third winding and / or a fourth winding, can be provided. Preferably, the additional windings are different from the first and second windings in the non-mounted state. More preferably, the additional windings in particular define an additional diameter of the passage opening in the non-mounted state.

[0017] In a preferred form, the contact element is ring-shaped. Preferably, the ring-shaped spring is self-closed and more preferably formed into a ring by connecting or joining the ends. Preferably, the contact element comprises a wound ring-shaped closed spring made of a preferably wire-shaped conductive material. Also, the envelope of the wire spring is substantially in the shape of a torus.

[0018] The winding in the sense of the present application is defined by a starting point and an ending point located on a plane having as a normal the main axis passing through the through-hole of the contact element. In one form, the starting point and the ending point have the same distance from the main axis of the contact element. Alternatively, the starting point and the ending point may be at different distances from the main axis of the contact element. The winding extends spirally between the starting point and the ending point. Preferably, the starting point and / or the ending point are arranged at the transition from a holding part of one winding to a supporting part or an extending part of the next winding. In the sense of the present invention, the holding part, the extending part, and / or the supporting part should not be considered to be subdivided by the starting point and / or the ending point. For example, if the contact element is cut along the circumference of the contact element within the plane of the starting point and the ending point during the transition between the holding part and the supporting part and / or the extending part, the contact element is individually divided into at least a first and a second winding.

[0019] The adjacent parts of the individual first and / or second windings, in particular the holding part, at least one supporting part, and, where applicable, at least one extending part, are preferably distinguishable from each other by torsion or bending. For example, the holding part is adjacent to other parts, preferably the supporting part and / or the extending part, and is connected to the other parts via a bending point. The supporting part and the extending part can also be connected to each other via a bending point.

[0020] Preferably, the first and / or second winding comprises at least a holding part and a supporting part, and the holding part and the supporting part are successively connected by an extending part, preferably directly or indirectly, and more preferably successively connected and successively indirectly connected. In one form, the first and second extending parts are adjacent to both ends of the supporting part and are preferably directly or indirectly connected to the supporting part. In one form, a radial part is formed between the holding part and at least one extending part, and / or between at least one supporting part and at least one extending part, and / or between the holding part and the supporting part. In this case, at least one holding part, extending part, and / or supporting part are indirectly connected to each other. Preferably, the radial part is as short as possible in the winding direction. More preferably, the radial part represents the technically necessary bending radius of the bending points that necessarily exist between the individual parts. In one form, the radial part is made longer than technically necessary. Preferably, the radial part has the same small radius as technically necessary. Alternatively, the radial part has a radius larger than technically necessary. Preferably, at least one holding part, at least one extending part, and / or at least one supporting part are successively indirectly connected by the radial part respectively.

[0021] In one form, the basic shape of the first and / or second winding is selected from the group comprising generally circular, elliptical, triangular, square, pentagonal or polygonal, square, rectangular, trapezoidal, polygonal, semi-circular, and / or house-shaped. Preferably, the first and / or second winding has a basic shape consisting of a plurality of shapes, or parts of a plurality of shapes such as triangular and rectangular parts, for example house-shaped, or for example a circular or partial circle and a part of a rectangle, or for example a circular and a part of a triangle. In one form, the first winding and / or the second winding are not circular and / or elliptical. and The exemplary enumeration should not be considered exhaustive in the sense of the present invention and can be supplemented within the framework of general technical knowledge.

[0022] The exemplary enumeration should not be considered exhaustive in the sense of the present invention and can be supplemented within the framework of general technical knowledge.

[0023] In one form, the first and second windings are configured to have the same, preferably similar, or different, preferably dissimilar, basic shapes when viewed in the first or second winding. Preferably, viewing the first or second winding is viewing in the circumferential direction. and In one form, the first and / or second windings are provided with at least one holding portion. In particular, the first and / or second windings are provided with at least one holding portion for contacting a component. Preferably, the inner wall of a component that is part of the cable ground and more preferably designed as a nipple or double nipple can preferably be contacted by the holding portion.

[0024]

[0025] In one form, the projection of the holding portion or holding portions is arranged at an angle to or parallel to the main axis in the plane in which the main axis is arranged. In one form, at least one holding portion is linear and more preferably has an angle in the range of about -50° to about +50°, preferably about -45° to about +45°, more preferably about -30° to about +30° with respect to the main axis of the contact element passing through the center of the intersection. In particular, an envelope can be installed around the contact element. The envelope is a virtual surface that preferably contacts each part of each winding, preferably each winding of the contact element, on the outside. The envelope forms a side surface within the range of the holding portion. Preferably, the outer surface of the envelope of the contact element is substantially conical (when the holding portion is angled as described above) or cylindrical (when the holding portion is arranged parallel as described above). The conical shape of the contact element derived from the outer surface has the advantage that the contact element can be easily inserted into a component with a cylindrical interior. In particular, the holding portion angled in this way is supported by the inner wall of the component, whereby the winding is aligned at an angle with respect to the radius to the main axis in the top view of the contact element in the main axis direction.

[0026] ​When the term "about" is used in the context of the present invention together with a value or a range of values, this term should be understood to mean an acceptable range that a person skilled in the art would normally consider in the relevant field, in particular an acceptable range of ±20%, preferably ±10%, more preferably ±5%. When different ranges of values, for example, a preferred range of values and an even more preferred range of values, are indicated in the present invention, the lower and upper limit values of the different ranges of values can be combined with each other. In the context of the present invention, the term "substantially" refers to an acceptable range that a person skilled in the art can accept from an economic and technical perspective such that the corresponding feature can still be recognized or realized as such.

[0027] In one form, only the first winding or only the second winding is provided with a holding part that can contact the component. In one form, the outer surface of the envelope of the contact element is formed substantially only by the first winding or only by the second winding. In a further form, the holding part of the first winding and the holding part of the second winding are configured to form the side surface of the envelope of the contact element. In particular, the outer surface of the envelope of the contact element is cylindrical or conical. In a further form, the holding part of the first or second winding is arranged radially outside with respect to the spindle relative to the holding part of the respective other winding.

[0028] In one form, the second winding is specifically wound twice. The second winding wound twice is characterized by the fact that it preferably has a holding part arranged between two partial windings. The extension of the second winding is preferably arranged closer to the spindle than the extension of the first winding. The extension is preferably divided into two parts. This design advantageously enables a part of the inner wall of the component to which the contact element can be attached to be engaged between the parts of the extension. For example, the component can be manufactured such that it has a first and a second part having a diameter suitable for abutting against the extension of the first winding, and a third part having an inner diameter smaller than the first and second parts and designed to abut against the extension, and the third part is arranged between the first and second parts.

[0029] In a further form, the first and second windings are in particular provided with a support for contacting at least one elongate component. The support may be substantially straight or round. In particular, the support of the first winding defines a first diameter d1 of the through-passage. In particular, the support of the second winding defines a second diameter d2 of the through-passage.

[0030] In a further form, the first and / or second winding is in particular provided with at least one extension adjacent to the holding part. Preferably, the extension is arranged between the holding part and the support. In one form, the winding has first and second extensions arranged on both sides of the support. In one form, the first extension is substantially the same length as, shorter than, or longer than the second extension.

[0031] Preferably, the holding part, the support, and, where applicable, the extension are distinguished from each other by different shapes. For example, the holding part is preferably formed as a straight part of the winding arranged radially outside the contact element. Also, the support is preferably designed as a circular part, an elliptical part, or an angular part with two legs. In one form, the support is coiled, for example comprising two triangular, rectangular, or circular coiled parts. The extension preferably extends at right angles to the main axis.

[0032] In the design of the contact element where the holding part is arranged substantially parallel to the main axis, the individual first and / or second windings preferably project two legs each onto the plane of view in a top view of the contact element in the main axis direction. This is particularly the case when the contact element has a cylindrical shape. The viewing plane is a plane having the main axis of the contact element as its normal. Preferably, the two legs of the support portion projected onto the viewing plane, more preferably at least the support portion and the extension portion, are connected to each other at the apex. The bisector of the angle formed by the two legs is hereinafter the alignment of the first and / or second windings. When the alignment of the first and / or second windings coincides with the radius of the contact element with respect to the main axis or is at an angle of about ±5° from the radius with respect to the main axis, the first and / or second windings are substantially radially aligned in the sense of this application. In this configuration, in the non-mounted state of the contact element, the first and / or second windings are substantially radially aligned. When the bisector of the angle, or the alignment of the first and / or second windings, deviates by more than about ±5°, preferably by about ±6° to about ±80° from the radius of the contact element with respect to the main axis, the first and / or second windings are aligned deviating from the radius with respect to the main axis.

[0033] In a further preferred form, the first and / or second windings are aligned deviating by about ±6° to about ±30°, preferably by about ±6° to about ±15°, more preferably by about ±6° to ±10° from the radius with respect to the main axis in the non-mounted state. Preferably, only the first or only the second winding is at an angle away from the radius with respect to the main axis. More preferably, all of the first and / or all of the second windings deviate by preferably approximately the same angle in the same direction, either counterclockwise or clockwise, with respect to the radius with respect to the main axis. Even more preferably, the first winding and the second winding deviate by different angles from the radius with respect to the main axis. In a further configuration, one of the first winding or the second winding is radially aligned while the other winding is aligned deviating from the radius with respect to the main axis.

[0034] In one configuration, the first and / or second windings are substantially radially aligned when attached to a component, particularly a component having a cylindrical inner wall, without passing through a long component. In a further configuration, the first and / or second windings are aligned at an angle with respect to the radius with respect to the main axis when attached to a component, particularly a component having a cylindrical inner wall, without passing through a long component.

[0035] In one form, the alignment of the first and / or second windings in an installed state where at least one elongate component does not pass through the through-opening of the contact element is offset by about ±6° to about ±50°, preferably about ±6° to about ±30°, more preferably about ±8° to ±25° with respect to the radius relative to the spindle. In one form, the alignment of the first and / or second windings in an installed state where the elongate component passes through is offset by about ±10° to about ±80°, preferably about ±10° to about ±75°, more preferably about ±20° to ±70° with respect to the radius relative to the spindle. By passing the elongate component when attaching the contact element to a component having a cylindrical inner wall, the bend of at least the first and / or second windings, preferably all the windings, is preferably increased compared to the state of being attached to such a component without passing the elongate component.

[0036] In one form, the first and / or second windings in a state of being attached to a component, particularly a component having a cylindrical inner wall, together with at least one elongate component passing through the component and the contact element, are aligned at an angle with respect to the radius relative to the spindle.

[0037] In one form, the first and second windings are arranged alternately in the circumferential direction of the contact element. In a further form, one or more second windings are arranged between two first windings. For example, two or three second windings can be arranged between two first windings. In a further form, the first and second windings are arranged alternately individually or in groups. For example, a group of two first windings can be alternated with a group of two second windings.

[0038] In one form, a plurality of forms of the second winding, preferably defining a second diameter d2, are provided. In particular, the forms of the second winding are geometrically different from each other. Preferably, each of the different forms of the second winding is arranged between the first windings. For example, only one of the first forms of the second winding, only one of the second forms of the second winding, and, if applicable, only one of the third forms of the second winding are arranged between the first windings, respectively.

[0039] In one form, for example, the first winding is formed with at least one extension and defines a first diameter d1 of the intersection, and the second winding is seen and actually to be substantially triangular and to define a second diameter d2 of the intersection, and the first diameter d1 is made smaller than the second diameter d2. For example, the first winding is in the shape of a house or a pentagon. Preferably, the first winding includes two extensions. It is more preferable that the extensions of the first winding are of substantially the same length. It is more preferable that the first winding and the second winding alternate in the circumferential direction. In one form, the first winding and the second winding are seen and actually to be substantially triangular, and the first winding is further provided with an extension between the support portion and the holding portion with respect to each second winding.

[0040] In one form, the contact element comprises at least one conductive material. Preferably, the contact element comprises at least one material selected from the group consisting of steel, spring steel, copper, gold, brass, and / or carbon, and variations thereof.

[0041] An exemplary contact element of the present invention in a non-mounted state has a plurality of first windings and a plurality of second windings arranged alternately. The contact element is preferably toroidal, designed as a coiled spring closed in a ring shape, and more preferably made of a wire-shaped material. The first winding differs from the second winding in geometric configuration and / or dimensions and projects radially inward in different lengths in the direction of the main axis. The first and second windings define an intersection. The first and second windings are radially aligned. The shape of the contact element is cylindrical. The intersection has a first diameter d1 defined by the first winding. Also, the intersection has a second diameter defined by the second winding. The first diameter d1 is, for example, smaller than the second diameter d2 or vice versa.

[0042] In a further exemplary form of the contact element of the present invention, the first and second windings have a holding part that can contact the inner wall of the component. The holding part is aligned, for example, parallel to the main axis of the contact element. The contact element has a cylindrical shape when thus attached. In other exemplary forms, the holding part can be arranged at an angle to the main axis. The contact element has a conical shape when not attached and a cylindrical shape when attached to the component. Depending on the manufacturing process, the angle of the holding element with respect to the main axis can be designed differently in the non-attached state. In one form, the angle of the holding element with respect to the main axis in the non-attached state is from about 0° to about 90°, preferably from about 1° to about 90°, more preferably from about 20° to about 60°. Particularly when the angle of the holding part with respect to the main axis is designed to be about 90° for manufacturing reasons, only one diameter of the through-passage formed by the transition from the holding part to the support part or the extending part is given in the non-attached state. Also, the first and second windings each comprise a support part that can contact at least one elongated component. The support part is designed, for example, as a part in the shape of a corner with two legs. The first winding can also have an extending part arranged between the holding part and the support part. The second winding is designed such that the support part is directly adjacent to the holding part.

[0043] The contact element is preferably attachable to a component of the cable ground, preferably to ensure electromagnetic compatibility, for example, in accordance with IEC62153-4-10:2015+AMD1:2020 CSV. The contact element according to the present invention can be attached to a component, particularly a component having a cylindrical inner wall. When the outer diameter of the contact element is less than or equal to the inner diameter of the component, the contact element does not substantially deform in the attached state. When the outer diameter of the contact element is larger than the inner diameter of the component, the contact element is compressed radially in the attached state. As a result, the first and / or second windings deform. In the attached state, when an elongated component whose diameter of the elongated component is at least larger than the first and / or second diameter of the contact element is passed through the component having the contact element, the first and / or second windings contact the elongated component and deform. This means that two deformations of the contact element can be performed in the attached state.

[0044] In an exemplary form of the contact element, the contact element can be attached to a part having a cylindrical inner wall, and the elongate part can pass through the through-opening. The elongate part has an exemplary elongate part diameter that is greater than the first diameter d1 but smaller than the second diameter d2. The first winding is deformed by the passage of the elongate part and its insertion into the part, and forms a first mounting diameter d1 that is the same size as the elongate part diameter. e Advantageously, the passage of the elongate part causes the first winding to deform circumferentially of the contact element such that the alignment of the first winding has an angle with respect to the radius relative to the main axis of the contact element. For example, the first winding aligns counterclockwise. The first winding preferably has a greater angle with respect to the radius relative to the main axis of the contact element than before the insertion of the elongate part. In this exemplary form of the attached contact element, the second winding preferably aligns as if in a mounted state where there is substantially no elongate part passing through as the elongate part does not contact it. Preferably, the first winding is designed such that it can move over the second winding without contacting or entraining the second winding. The radial displacement of the first winding, or the radial expansion of the contact element, is substantially prevented by the part to which the contact element is attached and whose inner wall preferably supports the holding part of the contact element. In particular, the first and second windings are designed such that they can be deformed substantially individually. In a further form, integral deformation of the first and second windings is possible. Preferably, the first and second windings can slide relative to each other, and more preferably do not collide when the elongate part is inserted into the through-opening. In an alternative form, the first and second windings can contact each other when the first winding deforms within the range where it preferably abuts at least one elongate part via a support part.

[0045] In a further exemplary form of the contact element, the contact element has a first winding formed in a triangular shape and a second winding formed in a rectangular shape in the non-mounted state. In this form, the first winding defines the first diameter d1 of the through-opening and the first outer diameter d of the contact element. A1 Also, the second winding defines the second diameter d2 of the through-opening and the second outer diameter d of the contact element. A2is defined. In an exemplary form, the first winding is substantially triangular in shape, and the holding portion and the support portion form a generally isosceles triangle when viewed in the circumferential direction, which can also be formed with an obtuse angle. The support portion, the two extending portions, and the holding portion of the second winding form a rectangle when viewed in the circumferential direction, and the holding portion of the second winding is arranged radially outward with respect to the main axis from the holding portion of the first winding.

[0046] In a further exemplary form of the contact element, the contact element comprises a first winding formed in a triangle and a second winding formed in two different triangles. Only one of the first forms of the second winding and only one of the second forms of the second winding are respectively arranged between the first windings. In the circumferential direction, the first winding and the two different second windings are arranged in sequence such that the first form of the second winding follows the first winding, and the second form of the second winding follows the first form of the second winding. The first form of the second winding protrudes radially outward with respect to the main axis from the first winding and the second form of the second winding. This design advantageously affects the bending characteristics of the contact element, in particular making the contact element softer. The holding portion of the first form of the second winding is arranged, for example, radially outward with respect to the main axis from the holding portion of the second form of the second winding.

[0047] In a further exemplary form, the contact element has two forms of a first winding and a second winding. In particular, only one of the first forms of the second winding and only one of the second forms of the second winding are respectively arranged between the first windings. The first winding has a holding part, a first extending part, a bent support part whose envelope can be convex inward, and a second extending part. The first form of the second winding has a holding part, a first extending part, a support part whose envelope can be convex inward, and a second extending part. The second form of the second winding has a holding part, a first extending part, a support part whose envelope can be convex inward, and a second extending part having approximately the same length as the first extending part. The holding part of the first winding is approximately the same length as the holding part of the first form of the second winding. The first extending part of the first form of the second winding is approximately the same length as the second extending part of the second form of the second winding. The second extending part of the first form of the second winding is approximately the same length as the first extending part of the second form of the second winding. The first extending part of the first form of the second winding and the second extending part of the second form of the second winding are longer than the second extending part of the first form of the second winding and the first extending part of the second form of the second winding. The holding part of the first winding is adjacent to the second extending part of the previous second form of the second winding, the second extending part of the first winding is adjacent to the first holding part of the first form of the second winding, the second extending part of the first form of the second winding is adjacent to the holding part of the second form of the second winding, the second extending part of the second form of the second winding is adjacent to the holding part of the subsequent first winding, and so on.

[0048] The support portion of the first winding defines a first diameter d1. The support portions of the first and second forms of the second winding define a second diameter d2 that is larger than d1. The retaining portion of the second form of the second winding is disposed, for example, closer to the spindle than the retaining portion of the first winding and the retaining portion of the first form of the second winding. The retaining portion of the first winding and the retaining portion of the first form of the second winding are at substantially the same distance from the spindle. According to this exemplary form, a part of the inner wall of the component to which the contact element can be attached can be engaged between the retaining portion of the first winding and the retaining portion of the first form of the second winding. For example, the part can be designed to have first and second inner diameters suitable for the retaining portion of the first winding and the retaining portion of the first form of the second winding to abut, and the first and second inner diameters are preferably of the same size. Advantageously, a third inner diameter that is smaller than the first and second inner diameters and is designed for the retaining portion of the second form of the second winding is disposed between the first and second inner diameters. Thus, the portion of the inner wall of the part with the third inner diameter can be engaged between the retaining portion of the first winding and the retaining portion of the first form of the second winding.

[0049] In a further exemplary form of the contact element, the contact element can be attached to a part having a cylindrical inner wall, and the elongate part can pass through the passage opening. The elongate part has an exemplary elongate part diameter that is larger than the first diameter d1 and larger than the second diameter d2. The first and second windings are deformed or further deformed in the mounted state within the part after the elongate part has passed through, and a first mounting diameter d1 e and a second mounting diameter d2 e are formed. The first and second windings are deformed by the passage of the elongate part in the circumferential direction of the contact element, for example, such that the alignment of the first and second windings is at a different angle with respect to the radius with respect to the spindle from the original alignment, for example, aligning counterclockwise or clockwise.

[0050] In a further exemplary form of the contact element, the alignment of the first and second windings in the non-mounted state is at an angle, for example, an angle of about 25°, with respect to the radius with respect to the spindle of the contact element.

[0051] The first and second windings can be designed differently and can be combined in any way. For example, the first and / or second windings may be triangular, house-shaped, pentagonal, hexagonal, circular, wound in a circle, or wound back on itself. In particular, a winding wound back on itself has at least one winding sub-section in the top view in the circumferential direction of the contact element. For example, the winding sub-section is guided 360° in the circumferential direction of the contact element in the top view of the winding. The sub-section can have a circular and / or polygonal shape. The first and / or second windings may be symmetric or asymmetric. For example, the first winding may protrude further radially inward towards the main axis of the contact element than the second winding, or vice versa.

[0052] In a further exemplary form, the contact element is assumed to have a conical shape. The holding part is arranged at an angle with respect to the plane in which the main axis of the contact element lies. The projection of the holding part onto the plane in which the main axis of the contact element lies has an angle with respect to the main axis. The support part, and where applicable the extension part, are arranged at an angle with respect to the radius with respect to the main axis of the contact element. By attaching an exemplary contact element to a part having a cylindrical inner wall, the first and / or second windings are deformed such that their respective holding parts are supported by the inner wall. The support part, and where applicable the extension part, have a larger angle with respect to the radius with respect to the main axis in the mounted state than in the unmounted state. When a long component later passes through the contact element in the state where the long component is attached to the part, the first and / or second windings are deformed according to the diameter of the long component such that the support part, and where applicable the extension part, have a larger angle with respect to the radius with respect to the main axis than in the mounted state without the long component.

[0053] there is In a form, the holding part of the contact element is assumed to be supported by the inner wall of the cable gland. The inner wall preferably has a conical or cylindrical shape. More preferably, a plurality of holding parts, even more preferably all the holding parts of at least the first winding, even more preferably the first and second windings of the contact element, contact the inner wall.

[0054] In one form, at least one contact element is received within a component having at least one male thread, whereby the elongate component is adapted to pass through the component. Preferably, the cable gland comprises a nipple, for example a double nipple. The nipple is also advantageously a component that houses the contact element. The component preferably comprises an inner wall that supports the contact element. The retaining portion is also preferably supported by the inner wall of the component. The inner wall of the component is preferably cylindrical. More preferably, the vertical axis of the component, particularly of a component having a cylindrical inner wall, extends parallel to the main axis of the attached contact element.

[0055] The contact element deforms when inserted into the component. The contact element in the mounted state is inserted into the component such that the retaining portion contacts at least partially, preferably completely, the inner wall of the component. In particular, the inner diameter of the component is smaller than the maximum outer diameter of the non-attached contact element. Preferably, the contact element is at least partially compressed radially when attached to the component. More preferably, a retaining portion having an angle of about -50° to about +50° with respect to the main axis of the through-opening of the contact element in a plane having a main axis in the non-mounted state aligns substantially parallel to the main axis in the mounted state. More preferably, the first mounting diameter d1 of the through-opening without the elongate component in the mounted state m is smaller than the first diameter d1 in the non-mounted state.

[0056] In one form, particularly when the outer diameter of the contact element is less than or equal to the inner diameter of the component, the first mounting diameter d1 of the through-opening without the elongate component in the mounted state m is made the same size as the first diameter d1 in the non-mounted state. Preferably, by inserting the elongate component such that the retaining portion makes electrical contact with the inner wall of the component, at least the outer diameter of the contact element expands in the mounted state. More preferably, the second mounting diameter d2 of the through-opening without the elongate component in the mounted state m is smaller than the diameter d2 in the non-mounted state. More preferably, the second mounting diameter d2 of the through-opening in the mounted state m is the same size as the diameter d2 in the non-mounted state.

[0057] In a form where the first and / or second winding in the non-attached state is aligned at an angle with respect to the radius to the spindle in the top view of the contact element in the direction of the spindle, the alignment of the first and / or second winding can change when the contact element is attached to the component. Preferably, when the contact element is attached to the component and when the long component passes through while the contact element is attached to the component, the alignment angle deviating from the radius to the spindle increases.

[0058] In one form, at least one contact element is housed inside a component having at least one male thread, and at least one long component is supposed to pass through the component. At least one long component passes through the passage opening of the contact element. The first and / or second winding contacts the long component, particularly the peeled part of the long component. In a further form, depending on the diameter of the long component, only the first winding, only the second winding, or both the first and second windings are supposed to contact the long component via a support part.

[0059] Preferably, the first and / or second winding contacts and is pushed against the long component so as to be displaced in a radial alignment with respect to the spindle. Preferably, when the outer diameter of the contact element in the non-attached state of the long component is smaller than the inner diameter of the component, the first and / or second winding contacts and is pushed against the long component so as to be displaced in a radial alignment with respect to the spindle. Preferably, when the long component passes through the passage opening of the contact element attached to the component, the alignment of the first and / or second winding changes. For example, if the first and / or second winding is radially aligned before the long component passes through, the long component passing through causes these windings to be displaced or deformed so as to be aligned at an angle with respect to the radius to the spindle. For example, if the alignment of the first and / or second winding is arranged at an angle from the radius to the spindle before the long component passes through, inserting the long component causes these windings to be displaced or deformed so that the angle with respect to the radius to the spindle increases.

[0060] An elongated part in the sense of the present invention comprises at least one elongated, particularly flexible, preferably pliable body selected from the group comprising a cable, a hose and / or a tube. Preferably, the elongated part is not a contact pin. Further preferably, the elongated part is designed to transmit current and / or data. Preferably, at least one elongated part can pass through a contact element. Further preferably, at least one elongated part can pass through a contact element attached to the part. Preferably, the elongated part has a stripped electromagnetic shield, further preferably within the scope of a cable gland.

[0061] In one embodiment, the elongated part has a first mounting diameter d1 of the contact element mounted on the part without the elongated part. m Preferably, the elongated part contacts at least the support portion of the first winding.

[0062] In one embodiment, the elongated part has a second mounting diameter d2 of the contact element mounted on the part without the elongated part. m Preferably, the elongated part has a diameter equal to or greater than 1 mm. Preferably, the elongated part contacts the supports of the first and second windings.

[0063] The exemplary cable gland comprises a part capable of receiving the contact element. The exemplary cable gland also has a sealing ring for sealing the connection shape, a pressure element for sealing the elongated part, and a pressure screw for applying pressure to the pressure element. An exemplary configuration of the contact element in an unmounted state has a first winding between which two second windings are arranged. The first and second windings are radially aligned with the bisector of the angle of the legs of the supports of the first and second windings corresponding to or aligned with the radius of the contact element, respectively, although other alignments are possible. When the exemplary contact element is mounted in the part, the mounting compresses the contact element radially. This compression causes the first windings to contact each other and to deform in the circumferential direction of the contact element. Thus, the alignment of the first windings changes by an angle β1 with respect to the radius of the contact element. The alignment of the second windings remains radial, although other alignments are possible.

[0064] In an exemplary design of a component having a contact element, a long component having a small diameter passes through the component or the contact element, whereby the long component having a small diameter contacts only the first winding and is deformed circumferentially. As a result, the first winding aligns at an angle β2 greater than the angle β1 with respect to the radius of the contact element. The second winding remains radially aligned, although other alignments are possible. On the other hand, when a long component having a large diameter passes through the component and the contact element and the long component contacts the first winding and the second winding and deforms them circumferentially, the first winding aligns at an angle β3 greater than the angle β2 with respect to the radius of the contact element. The second winding aligns at an angle γ greater than 0° with respect to the radius.

[0065] The contact element is for contacting a component having a shielding function and / or a current propagation function to used used for can be. In one form, the contact element is intended to be used for attachment to a component having a rotationally symmetric inner wall. In one form, the contact element is intended to be used for attachment to a component having a cylindrical and / or conical inner wall. Alternatively, the inner wall can be toroidal, or double conical, or have a different rotationally symmetric design. In one form, the contact element is intended to be inserted into a cable ground. Preferably, the contact element is used to electrically connect the shield of a long component to a component of the cable ground.

[0066] Even more advantageous forms are shown in the following drawings. However, the further teachings shown in the drawings should not be construed as limiting, rather the features described in the drawings can be combined with each other and with the features described above to form further forms. Also, it should be noted that the reference signs described in the drawings do not limit the scope of protection of the present invention, but merely refer to the forms shown in the drawings. Hereinafter, the same component, or components having the same function, have the same reference signs.

[0067] Figure 1 shows the contact element 10 in the non - mounted state. The contact element 10 has a plurality of first windings 12 and a plurality of second windings 14, and only one of each is labeled as an example. The contact element 10 is designed in a toroidal shape as a ring - shaped spring formed as a self - closed coil spring. No joints are shown in the drawing. The first winding 12 is different from the second winding 14 and protrudes radially inward to different extents. The first and second windings 12, 14 define an intersection 16. In the viewing plane of Figure 1, the first and second windings are substantially radially aligned with respect to the main axis 24 shown in Figure 2. The intersection 16 has a first diameter d1 defined by the first winding 12. Also, the intersection 16 has a second diameter d2 defined by the second winding 14. The first diameter d1 is smaller than the second diameter d2.

[0068] Figure 2 shows a cross - sectional view taken along line II - II of Figure 1. The first and second windings 12, 14 have a holding portion 18 that can contact the inner wall of a component (not shown). The holding portion 18 is aligned parallel to the main axis 24 of the contact element 10. However, as can be understood from the above description, the holding portion 18 can also be arranged at an angle with respect to the main axis 24. Also, the first and second windings 12, 14 each have a support portion 20 that can contact a long component (not shown). The support portion 20 is designed as a corner - shaped part with two legs 19, 21. The first winding 12 also has an extension portion 22 arranged between the holding portion 18 and the support portion 20. The second winding 14 is designed such that the support portion 20 is directly adjacent to the holding portion.

[0069] Figure 3 shows the contact element 10 of Figure 1 in the state of being mounted within a component (not shown). By mounting the contact element within the component, the contact element is compressed radially. The first winding 12 has a first mounting diameter d1 m and the second winding 14 has a second mounting diameter d2. m

[0070] Figure 4 shows the contact element 10 in a state of being mounted within a component (not shown), and in this drawing, a long component (not shown for clarity) passes through the through-hole 16. The long component has a long component diameter that is larger than the first mounting diameter d1 of FIG. 3 m but smaller than the second diameter d2 of FIG. 3 m The first winding 12 is thereby at least deformed to form a first mounting diameter d1 of the same size as the long component diameter e The first winding 12 has an angle β with respect to the radius r in a viewing plane that deviates from the radius r in the circumferential direction of the contact element 10 due to the passage of the long component, and the apex is arranged on the envelope outside the contact element 10 and is deformed to be aligned counterclockwise in the viewing plane. Since the long component does not contact the second winding 14, it is substantially radially aligned as shown in FIG. 1 in the non-mounted state. The radial displacement of the first winding 12 or the radial expansion of the contact element 10 is prevented by a component (not shown) to which the contact element 10 is mounted.

[0071] Figure 5 shows the contact element 10 in a state of being mounted within a component (not shown), and in this drawing, a long component (not shown for clarity) passes through the through-hole 16. The long component has a long component diameter that is larger than the first mounting diameter d1 m and larger than the second mounting diameter d2 of FIG. 3 m Thereby, the first winding 12 and the second winding 14 are deformed to form a first mounting diameter d1 e and a second mounting diameter d2 of the same size as the long component diameter (not further described) especially in the peeling range of the long component e The first and second windings 12, 14 have a certain angle (not shown here) with respect to the radius r with respect to the main axis 24 of the contact element 10 in the viewing plane in the circumferential direction of the contact element 10 due to the passage of the long component, and the apex is arranged on the outer circumference of the contact element 10 and is deformed to be aligned counterclockwise in the viewing plane. The radial displacement of the first winding or the radial expansion of the contact element is prevented by a component (not shown) to which the contact element 10 is mounted.

[0072] FIG. 6 shows an alternative form of the contact element 10 in a non-mounted state. The first and second windings 12, 14 are aligned at an angle α of about 15° to about 20° with respect to the radius r of the contact element 10. The first winding 12 defines a first diameter d1 of the through-hole 16, and the second winding 14 defines a second diameter d2.

[0073] FIG. 7 shows a sectional view taken along line VI-VI of FIG. 6. The first and second windings 12, 14 have a holding portion 18 that can contact the inner wall of a component (not shown). The holding portion 18 is aligned parallel to the main axis 24 of the contact element 10. Also, the first and second windings 12, 14 each include a support portion 20 that can contact a long component (not shown). The support portion 20 is designed as a corner-shaped portion having two legs 19, 21. The first winding 12 also has an extending portion 22 disposed between the holding portion 18 and the support portion 20. The second winding 14 is designed such that the support portion 20 is directly adjacent to the holding portion.

[0074] FIG. 8 shows an alternative form of the contact element 10 in a non-mounted state having a first winding 12 formed in a triangle and a second winding 14 formed in a rectangle. The first winding 12 defines a first diameter d1 of the through-hole 16 and a first outer diameter d A1 of the contact element 10. The second winding 14 defines a second diameter d2 of the through-hole 16 and a second outer diameter d A2 of the contact element 10.

[0075] FIG. 9 shows a sectional view of FIG. 8. The first winding 12 is substantially triangular having a holding portion 18.1 and a support portion 20.1 that generally form an isosceles triangle (which can also be formed with an obtuse angle) when viewed in the circumferential direction. The support portion 20.2, the extending portion 22.2, and the holding portion 18.2 of the second winding 14 form a rectangle when viewed in the circumferential direction, whereby the holding portion 18.2 of the second winding 14 is disposed radially outward of the holding portion 18.1 of the first winding 12 with respect to the main axis 24.

[0076] Figure 10 shows an alternative form of the contact element 10 having a first winding 12 formed in a triangle and second windings 14.1, 14.2 formed in a triangle. The first winding 12, the second winding 14.1, and the second winding 14.2 are arranged successively in the circumferential direction. The second winding 14.2 protrudes radially outward with respect to the main axis 24 from the first winding 12 and the second winding 14.1.

[0077] Figure 11 shows a cross-sectional view of Figure 10, from which a series of the first winding 12, the second winding 14.1, and the second winding 14.2 can be seen. From Figure 11, it can also be seen that the holding part 18.2 of the second winding 14.2 is arranged radially outward with respect to the main axis 24 from the holding part 18.1 of the second winding 14.1.

[0078] Figure 12 shows an alternative form of the contact element having the first winding 12 and two forms 14.1, 14.2 of the second winding.

[0079] Figure 13 shows a cross-sectional view of Figure 12, from which it can be seen that the first winding 12 has a bent support part 20.1, two extending parts 22.1, 22.1, and a holding part 18.1. The contact element 10 includes two forms 14.1, 14.2 of the second winding. The first form 14.1 of the second winding includes a holding part 18.2, two extending parts 22.3, 22.4, and a support part 20.2. The second form 14.2 of the second winding immediately following includes a holding part 18.3, two extending parts 22.5, 22.6, and a support part 20.3. The holding part 18.3 of the second form 14.2 of the second winding is arranged closer to the main axis 24 than the holding parts 18.1, 18.2 of the first winding 12 and the first form 14.1 of the second winding. With this form, a part of the inner wall of a component (not shown here) to which the contact element 10 can be attached can be engaged between the holding parts 18.1, 18.2. For example, the component can be manufactured such that the bore has a first and a second inner diameter suitable for the holding parts 18.1, 18, 2 of the first winding 12 and the first form 14.1 of the second winding to abut, forms the above part of the component, and a smaller third inner diameter designed to abut the holding part 18.3 is arranged between the first and the second inner diameters.

[0080] Figure 14 shows a longitudinal section passing through the cable gland 40. The cable gland 40 has a part 42 to which the contact element 10 is attached. During attachment, the contact element 10 is compressed radially with respect to the main shaft 24 so as to be supported by the inner wall 44 of the part 42 at the holding part 18.

[0081] Figure 15 shows the longitudinal section of the cable gland of Figure 14 together with the long part 50 passing through. The long part 50 has a peeling part 52 that contacts the support part 20 of the contact element 10. As described above, the windings 12 and 14 contacted by the peeling part 52 in the long part 50 are deformed, thereby preventing radial expansion when the holding part 18 is held on the inner wall 44.

[0082] Figure 16 shows an alternative form of the non-attached contact element 10. The contact element has a first winding 12 with two second windings 14.1 and 14.2 arranged therebetween. The windings 12 and, for example, 14.1 are radially aligned respectively, and the angle bisectors of the legs of the support parts 20.1 and 20.2, or 20.3 and 20.4 correspond to the radius r of the contact element 10.

[0083] Figure 17 shows the contact element 10 of Figure 16 attached to the part 42. The contact element 10 is compressed radially by the attachment. Due to this compression, the first windings 12 contact each other and deform in the circumferential direction of the contact element 10. Therefore, the alignment of the first winding 12 changes by an angle β1 with respect to the radius r. The alignment of the exemplary second winding 14.1 remains radial.

[0084] Figure 18 shows the part of Figure 17 together with a long part having a small diameter. For clarity, the long part 50 has a certain diameter at the peeling part 52 (not shown), contacts only the first winding 12, and deforms the first winding 12 in the circumferential direction. As a result, the first winding 12 aligns at an angle β2 with respect to the radius r of the contact element 10. The exemplary second winding 14.1 remains radially aligned.

[0085] Figure 19 shows the components of Figure 17 together with a long component having a large diameter. For clarity, the long component 50 has a certain diameter at a peeling portion 52 (not shown), contacts the first winding 12 and the second winding 14, and deforms these windings in the circumferential direction. As a result, the first winding 12 aligns at an angle β3 with respect to the radius r of the contact element 10. The exemplary winding 14.2 aligns at an angle γ with respect to the direction of the radius r.

[0086] Figure 20 is an exploded view of the cable gland 40. The cable gland 10 includes a component 42 that can accommodate the contact element 10. The cable gland 40 has a sealing ring 46 for sealing a connection shape (not shown), a pressure element 48 for sealing a long component (not shown), and a pressure screw 49 for applying pressure to the pressure element 48.

[0087] According to the proposed contact element, various long components having different diameters can be safely contacted. The replacement of a contact element for adapting a cable gland to different cable diameters, known from the prior art, is not necessary with the proposed contact element. Also, according to the contact element of the present invention, by reducing the number of windings in contact with the long component, a long component having a small diameter can be particularly accommodated without increasing the spring stiffness conversely.

Claims

1. A cable ground (40) having at least one contact element (10) for contacting at least one elongate component (50), the contact element (10) comprising at least a plurality of first windings (12), a plurality of second windings (14) geometrically different from the first windings (12), and a passage opening (16) for passing through the elongate component (50), a first diameter d1 of the passage opening (16) being defined by the first winding (12), a second diameter d2 of the passage opening (16) being defined by the second winding (14), and the first diameter d1 being different from the second diameter d2.

2. The cable ground (40) according to claim 1, wherein the contact element (10) is ring-shaped.

3. The cable ground (40) according to claim 1, wherein the first and / or second windings (12, 14) comprise at least one holding portion (18) for contacting a component (42).

4. The cable ground (40) according to claim 1, wherein the first and second windings (12, 14) have a support portion (20) for abutting against the elongate component (50).

5. The cable ground (40) according to claim 3, wherein the first and / or second windings (12, 14) comprise at least one extension portion (22) adjacent to the holding portion (18).

6. The cable ground (40) according to claim 1, wherein the first and second windings (12, 14) have the same or different basic shapes when viewed in the circumferential direction of the first or second winding (12, 14).

7. The basic shape of the first and / or second windings (12, 14) is selected from the group consisting of circular, elliptical, triangular, quadrilateral, pentagonal or polygonal, square, rectangular, trapezoidal, polygonal, and / or semi-circular when viewed in the circumferential direction of the first or second winding (12, 14), according to claim 6 of the cable ground (40).

8. The cable ground (40) according to claim 1, wherein one or more second windings (14) are arranged between two first windings (12).

9. The cable ground (40) according to claim 1, wherein the first and second windings (12, 14) are arranged individually or alternately in groups.

10. The cable gland (40) according to claim 3 or 5, wherein at least one of the holding parts (18) is designed linearly and has an angle within a range of approximately -50° to approximately +50° with respect to the main axis (24) passing through the through-hole (16).

11. The support part (20) of the first and / or second winding (12, 14) is arcuate, linear, semi-circular when viewing the first or second winding in the circumferential direction, and / or is formed as part of a triangle having a triangular apex (26), the cable gland (40) according to claim 4.

12. The first winding (12) is formed with at least one extension part (22) and defines the first diameter d1 of the through-hole (16), the second winding (14) is substantially triangular when viewing the second winding (14) in the circumferential direction and defines the second diameter d2 of the through-hole (16), and the first diameter d1 is smaller than the second diameter d2, the cable gland (40) according to claim 1.

13. The cable gland (40) according to claim 3 or 5, wherein at least one of the holding parts (18) of the contact element (10) abuts against the inner wall (44) of the cable gland (40).

14. The cable gland (40) according to claim 1, wherein the at least one contact element (10) is accommodated inside a part (42) having at least one male thread, and at least one elongate part (50) can pass through the part.

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