Cable ground and its use

Abstract

A cable gland 50 is proposed, which comprises a part 52 and at least one contact element 10. The at least one contact element 10 comprises a number of windings of substantially the same geometric shape, each winding comprising a holding part for electrically contacting the part 52 surrounding the contact element 10, at least one support part for electrically contacting a shield of an elongated part and a first and a second extension part, the holding part, the first extension part and the at least one support part being arranged next to one another.

Description

Technical Field

[0001] The present invention relates to a cable gland. and thereof of use for use related.

Background Art

[0002] Cable glands for ensuring electromagnetic compatibility are generally known from the prior art. For example, Patent Document 1 has contact means provided with a wound spring element, and the winding of the spring element has a substantially straight holding portion aligned parallel to the sheath of the through-passage at the intended mounting position, and a support region is formed by substantially straight winding portions adjacent at an angle in the straight holding portion, and the winding of the spring element discloses an apparatus for the electromagnetic compatibility arrangement of a cable having an isosceles triangular cross-sectional shape. Patent Document 2 discloses a cable ground having contact elements each having a winding of the same shape that is trapezoidal in shape. Patent Document 3 discloses a contact element for a small switch.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

[0004] Cable glands known from the prior art have the drawback that when attaching a long component to a cable gland with a contact element, it easily tilts or gets caught and becomes immovable. In particular, when the cable diameter is small with respect to the chamber of the cable gland where the contact element is arranged, the cable gland known from the prior art twists, making the attachment more difficult or failing to optimally ensure electrical contact. Also, attaching a flexible cable to a cable gland is not comfortable for the above reasons.

Summary of the Invention

Problems to be Solved by the Invention

[0005] Therefore, an object of the present invention is to improve the cable gland door In particular, an object of the present invention is to provide a cable gland that is comfortable to install door In particular, an object of the present invention is to provide a cable gland that enables safe electrical contact door In particular, an object of the present invention is to provide a cable gland that facilitates the attachment of flexible long parts door to provide.

Means for Solving the Problems

[0006] According to the present invention, the problem is solved by a cable gland comprising a component and at least one contact element, the at least one contact element comprising a plurality of windings of substantially geometrically identical shape, each winding having a holding portion for making electrical contact with a component surrounding the contact element and at least one First and second support portion for making electrical contact with a shield of a long part, and first and second extending portions, the holding portion, the first extending portion, and at least 2 two support portions being arranged in succession with each other and the first and second support portions are adjacent to each other and solved by the cable gland.

[0007] Also, according to the present invention, the problem is solved by the use of the above-described cable gland for making electrical contact with at least one shield of at least one long part 。

Brief Description of the Drawings

[0008]

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DETAILED DESCRIPTION OF THE INVENTION

[0009] connect The successive elements comprise a plurality of windings of substantially geometrically the same shape. Each winding comprises a holding part for electrically contacting a part surrounding the connecting element, at least one support part for electrically contacting the shield of the elongate part, and first and second extending parts. The holding part, the first extending part, and the at least one support part are subsequently arranged in contact with each other. Preferably, the second extending part is arranged subsequent to the at least one support part.

[0010] In the context of the present invention, "geometrically identical" should be understood to mean that the shape of the winding substantially coincides when looking at each winding particularly in the circumferential direction of the contact element. In particular, a radius starting from the central longitudinal axis of the contact element is arranged, and the projection of the winding onto a plane that intersects at least each winding and preferably also intersects at least the holding portion of the winding substantially coincides.

[0011] The term "substantially (im Wesentlichen)" refers to an acceptable range that a person skilled in the art can accept from an economic and technical perspective such that the corresponding features can still be recognized or realized as such.

[0012] The winding in the context of the present application is defined by a starting point and an end point. Preferably, the intersection is defined by the winding, preferably by the support portion of the winding, more preferably by the radial portion connecting the first and second support portions of each winding. In one form, the starting point and the end point have the same distance from the central longitudinal axis of the contact element. Alternatively, the starting point and the end point may have different distances from the central longitudinal axis of the contact element. The individual windings extend spirally between the starting point and the end point. Preferably, the starting point and / or the end point are preferably arranged at the transition from the second extension portion of a winding to the holding portion of the next winding, behind or in front of the radial portion. In the context of the present invention, the holding portion, the extension portion, and / or the support portion should not be considered to be subdivided by the starting point and / or the end point. For example, if the contact element is cut along the periphery of the contact element within the plane of the starting point and the end point during the transition between the second extension portion and the holding portion, the contact element is divided into individual windings.

[0013] In one form, the first and / or second extension portions are configured to extend linearly. In a further form, the first and / or second extension portions are configured to extend in an arc. Preferably, the first and / or second extension portions are curved in the direction of the central longitudinal axis. Also preferably, the first and / or second extension portions are curved such that the envelope of the contact element has a concave surface within the extent of the first and / or second extension portions. Also preferably, the first and / or second extension portions are curved such that the envelope of the contact element has a convex surface within the extent of the first and / or second extension portions. In a further form, the first and / or second extension portions are configured to extend linearly or to curve within a plane normal to the central longitudinal axis.

[0014] In the context of the present invention, the envelope of the contact element is preferably a virtual surface that contacts the outside of each turn of the contact element.

[0015] In one form, the diameter of the through-passage in the inserted state is the same as in the non-inserted state, particularly when the outer diameter of the contact element that is not inserted is less than or equal to the inner diameter of the component. Preferably, at least in the mounted state, by inserting the elongate component such that the holding portion electrically contacts the inner wall of the component, at least the outer diameter of the contact element expands. Also, the diameter of the through-passage is preferably smaller in the inserted state than in the non-inserted state. Also preferably, the diameter of the through-passage is the same in the inserted state as in the non-inserted state.

[0016] In one form, the minimum diameter of the through-passage is taken to be part of the mounting diameter of the contact spring. Preferably, the minimum diameter of the through-passage is the diameter of the through-passage in the inserted state of the contact element.

[0017] Preferably, the mounting diameter is the outer diameter of the contact element in the mounted state. Preferably, the mounting diameter is the inner diameter of the component into which the contact element can be inserted and for which the contact element is provided.

[0018] Preferably, the ratio of the through-passage to the mounting diameter is from about 0.1 to about 0.7, more preferably from about 0.15 to about 0.5, and even more preferably from about 0.2 to about 0.3.

[0019] In one form, the through-hole has a maximum diameter. The maximum diameter is the diameter of the through-hole in the mounted state, i.e., when the elongate component is inserted. Preferably, the winding is substantially maximally distorted by the elongate component. Preferably, the maximum diameter is about 1.5 times to about 1.8 times, preferably about 2 times to about 5 times, more preferably about 2.5 times to about 3 times the minimum diameter of the through-hole.

[0020] In a form where the uninserted winding is aligned at an angle with respect to the radius to the central longitudinal axis when viewed from above in the central longitudinal axis direction of the contact element, the alignment of the winding can change when the contact element is attached to the component. Preferably, when the contact element is attached to the component and / or when the elongate component is inserted, especially when the contact element is inserted into the component, the alignment angle deviating from the radius to the central longitudinal axis increases.

[0021] In one form, the basic shape of the winding is configured in the shape of a house such that, as viewed in the circumferential direction of each winding, preferably at least one support forms a roof, preferably the first and second extending portions form walls, and preferably the holding portion forms a foundation or a floor.

[0022] Preferably, the contact element is configured to contact at least one shield of the elongate component.

[0023] The elongate component in the sense of the present invention comprises at least one elongate, particularly flexible, preferably flexible body selected from the group comprising cables, hoses, and / or tubes. Preferably, at least one elongate component can pass through the contact element. Also preferably, at least one elongate component can pass through the contact element attached to the component. Preferably, the elongate component comprises an electromagnetic shield, and more preferably, the electromagnetic shield is at least partially peeled off in the range where the contact element abuts or in the range of the cable ground.

[0024] 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 in a direction transverse to the longitudinal extension of the wire forming an individual winding. In one form, the wire is metallic, electrically conductive and preferably elastic. In one form, the wire forming an individual winding is provided with a substantially circular cross-section. In one form, the wire forming an individual winding has a cross-section deviating from a circle. In a further form, the wire has a cross-section that is quadrilateral, preferably rectangular, more preferably square.

[0025] In the context of the present invention, the cross-section is the part in a direction transverse to the longitudinal extension.

[0026] In the present invention, unless otherwise stated, the contact element is described in a non-mounted state. When the contact element is inserted into a component, for example, the chamber of a cable ground, the contact element is in an inserted state. When a long component is arranged in the chamber of a component having a contact element, the contact element is in a mounted state.

[0027] The contact element preferably comprises a through-passage, more preferably a through-passage surrounded or defined by a winding. When at least one long component is inserted into the contact element and guided particularly through the through-passage, the long component advantageously contacts the winding according to the diameter of at least one long component or the envelope formed by a plurality of long components. In particular, when one or more long components have an exposed electromagnetic shield in the contact area, a current can flow between the shield and the contact element, causing voltage equalization and / or, in particular, grounding one or more long components. Preferably, when the contact element is electrically connected to a component that is preferably electrically grounded, a current can flow between the shield and the contact element, causing voltage equalization and / or, in particular, grounding one or more long components. The reliable electrical connection between the long component and the component enabled by the contact element advantageously ensures electromagnetic compatibility.

[0028] The advantage of the proposed contact element is that it is more torsion-resistant than the contact elements known from the prior art. Advantageously, especially when mounting or inserting a particularly flexible elongate part through the opening of the contact element inserted into the chamber of the part, the contact element does not tilt or twist within the chamber. This ensures a safe and easy mounting. The proposed contact element is particularly advantageous for the convenient mounting of flexible elongate parts such as cables. Also, the extensions of the individual windings are advantageously supported, for example internally, by the end face and / or at least one circumferential shoulder of the part. Thereby, the contact element is stable within the chamber and a larger electrical contact surface is provided through which the electric current and / or heat flow can dissipate. In particular, the radial extension of the at least partially radially circumferential shoulder that fixes the spring within the chamber can preferably be used substantially completely as an electrical contact surface. In contrast, in the case of a spring having a triangular cross-section, only a point-like electrical contact is possible between the spring and the shoulder and / or the end face.

[0029] Each winding of the contact element comprises a holding part. The holding part is preferably configured linearly. Preferably, the holding part is configured to make electrical contact with the part into which or onto which the contact element can be inserted or arranged within the chamber. Also, the holding part can preferably contact the inner wall of the part, for example a cable gland. Preferably, the inner wall should be understood as the cylindrical peripheral wall of the part, which is limited on the end face, for example in one form, by at least one radially circumferential shoulder.

[0030] In one form, the holding part, or the projection of the holding part, is arranged at an angle to or parallel to the central longitudinal axis in the viewing plane in which the central longitudinal axis is arranged. In a further form, at least one holding part is configured as a straight line, and more preferably, with respect to the central longitudinal axis of the contact element passing through the center of the intersection, preferably looking radially at the central longitudinal axis, within the range of about -50° to about +50°, preferably about -45° to about +45°, more preferably about -30° to about +30°. The central longitudinal axis and the holding part are arranged on the viewing plane, or the holding part intersects the viewing plane and is to be arranged on the viewing plane. In a further form, looking radially at the central longitudinal axis, in the projection onto the viewing plane, for the holding part that intersects the central longitudinal axis substantially at the center or substantially coincides with the central longitudinal axis, the angle between the holding part and the central longitudinal axis is to be about -10° to about 10°.

[0031] In particular, an envelope can be installed around the contact element. The envelope is a virtual surface that contacts each part of each winding, preferably each winding of the connecting element. The envelope constitutes the side surface within the range of the holding part. Preferably, the side surface of the envelope of the contact element is substantially conical or cylindrical in shape. 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 part or a chamber of a part whose inner side is configured as a cylinder. In particular, the angled holding part, or the holding part forming the side surface of the conical envelope, can be positioned relative to the inner wall or chamber of the part so that, looking in the direction of the central longitudinal axis at the contact element, the windings are preferably aligned at an angle to the radius with respect to the central longitudinal axis. For example, the holding part abuts against the inner wall of the chamber in the inserted state and / or the mounted state and deforms according to the shape of the inner wall. For example, the cylindrical inner wall of the chamber can deform the contact element so that the side surface of the envelope of the inserted or mounted contact element is configured as a cylinder.

[0032] When the term "about" is used in the context of the present invention together with a value or a range of values, this term shall be understood to mean an acceptable range that a person skilled in the art normally considers 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 a 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.

[0033] Exemplary listings should not be considered exhaustive in the meaning of the present invention and can be supplemented within the framework of general technical knowledge.

[0034] The contact element comprises at least one support for electrically contacting the shield of the elongate component. In one form, at least one support is arranged in an arcuate or part - circular shape between a first extension and a second extension. In a preferred form, a first support and a second support are provided. Preferably, the first and second supports are configured substantially linearly. According to the present invention The winding is provided with a first support and a second support adjacent to each other. In a further form, the supports are provided with an angle of about 30° to about 130°, preferably about 60° to 110°, more preferably about 45° to about 90° with respect to each other.

[0035] In one form, the first support and the second support are substantially of the same length.

[0036] In one form, at least one support, preferably the first and second supports, is adjacent to the extension respectively.

[0037] The contact element comprises a first extending portion and a second extending portion, each preferably extending in a straight line. Preferably, the first extending portion and the second extending portion are arranged on parallel planes. Preferably, the first extending portion and the second extending portion are arranged on parallel planes in the inserted state. Preferably, the first extending portion and the second extending portion are arranged on parallel planes in the mounted state. More preferably, the envelope of the contact element preferably constitutes a conical surface within the range of the first extending portion and / or within the range of the second extending portion in the non-inserted, inserted, and / or mounted states.

[0038] In one form, the first extending portion and the second extending portion are configured to have substantially the same length. Preferably, the distance between the holding portion and the supporting portion of the winding is the length of the extending portion.

[0039] More preferably, the maximum distance between the holding portion and the supporting portion, preferably the distance between the outermost point in the radial direction of the holding portion and the innermost point in the radial direction of the supporting portion, defines the radial extending portion of the contact element.

[0040] Preferably, the ratio of the length of the extending portion of the contact element to the length of the radial extending portion is from about 0.1 to about 0.45, preferably from about 0.2 to about 0.4, more preferably from about 0.3 to about 0.35.

[0041] In a further form, the ratio of the length of the extending portion to the mounting diameter of the contact element is from about 0.5 to about 1, preferably from about 0.25 to about 0.46, more preferably from about 0.3 to about 0.44.

[0042] In a further form, the extension part, especially in the inserted state, is to have an angle of about 80° to about 100°, preferably about 80° to about 90°, more preferably about 80° to about 89°, and even more preferably about 85° with respect to the holding part. Surprisingly, when the angle between the extension part and the holding part is less than about 90°, it has been shown that the clamping of the contact element is stronger, especially in the cable gland, when inserting and removing long parts, especially cables. In particular, the angle between the holding part and the extension part can be selected so as not to exceed about 90° even in the case of manufacturing tolerances.

[0043] In one form, the holding part, the first extension part, the second extension part, and / or at least one support part are to be configured substantially linearly.

[0044] In one form, the holding part is adjacent to the first extension part, the first extension part is adjacent to at least one support part, and at least one support part is adjacent to the second extension part. Preferably, the second support part is adjacent to the first support part. Even more preferably, the second extension part is adjacent to the holding part of the next winding.

[0045] In one form, a radial part is to be configured between the holding part and the first and second extension parts and / or between at least one support part and the first and second extension parts. Preferably, the radial part is configured to be as small as possible. Even more preferably, the radial part represents the bending radius required technically and is arranged between the individual parts. In one form, the radial part is to be larger than the technical requirement. In the sense of the present invention, the holding part, the first extension part, at least one support part, and the second extension part are in contact with each other even when the radial part is arranged therebetween.

[0046] The individual windings of the contact element can be described in the form of a house in a top view of the winding, preferably in a longitudinal cross-section of the contact element. In the house form of the winding, the holding part preferably represents the floor, the extending part represents the wall, at least one supporting part represents the roof, and preferably the first and second supporting parts are in the form of a gable roof or indicate a gable roof. Preferably, the winding can be described by the Unicode character (U+2302) when viewed in the circumferential direction.

[0047] In one form, the contact element is configured to be in the shape of a ring or a torus. Preferably, a spring configured in a ring shape or a torus shape is self-closed, and more preferably becomes a ring or a torus shape by connecting or joining the ends. Also, the contact element preferably includes a coiled, ring-shaped closed spring made of a wire-shaped material. In one form, the contact element includes at least one conductive material. Preferably, the contact element includes at least one material selected from the group consisting of steel, spring steel, copper, gold, brass, and / or carbon, and variations thereof. Also, one envelope of the contact element is configured to be substantially like a torus.

[0048] Preferably, the contact element is configured to be adaptable to a chamber with a cylindrical or non-cylindrical inner wall.

[0049] In one form, the windings of the contact element are arranged to be radially aligned at least in the inserted state and / or the non-inserted state. In the form where the holding part is preferably arranged substantially parallel to the central longitudinal axis, the individual windings preferably project two legs into the plane of view when looking at the contact element from above in the direction of the central longitudinal axis. This is especially the case when the contact element has a cylindrical shape in the inserted state, for example. In this case, the plane of view is a plane normal to the central longitudinal axis of the contact element. Preferably, the two legs projected into the plane of view, preferably the two legs of the extension part, more preferably at least the two legs of at least one support part and the extension part are connected to each other at the apex. Preferably, the apex connects the first support part and the second support part. The angular bisector of the two legs is hereinafter the alignment of the winding. When the alignment of the winding coincides with the radius of the contact element with respect to the central longitudinal axis or is an angle from the radius with respect to the central longitudinal axis of about ±5°, the windings are substantially radially aligned in the meaning of this application. In this form, the windings are substantially radially aligned in the non-inserted or inserted state of the contact element. When the angular bisector or the alignment of the winding deviates by more than about ±5°, preferably about ±6° to about ±80° from the radius of the contact element with respect to the central longitudinal axis, the windings are aligned deviating from the radius with respect to the central longitudinal axis, for example in the mounted state.

[0050] In a further form, the windings are arranged to deviate from the radius with respect to the central longitudinal axis by about ±6° to about ±30°, preferably about ±6° to about ±15°, more preferably about ±6° to ±10° in the non-inserted state and / or the inserted state. Also preferably, all the windings deviate by approximately the same angle, preferably in the same direction, counterclockwise or clockwise from the radius with respect to the central longitudinal axis.

[0051] In one form, the contact element is provided with a plurality of windings. In one form, the nominal number of windings W n of the contact element is r dependent on the radial extension E E of the contact element, the mounting diameter D D and the wire diameter D n =(DE -2·E r ) π / D D It can be described by. The nominal number of turns preferably reflects the theoretical, preferably maximum number of turns for the minimum diameter of the through-hole. In one form, the contact element is designed with a number of turns in a ratio of about 0.33 to about 3, preferably about 0.4 to about 2.5, more preferably about 0.5 to about 2 with respect to the nominal number of turns. In an additional form, the connection element is designed with a number of turns in a ratio of about 1 to about 3, preferably about 1 to about 2.5, more preferably about 1 to about 2 with respect to the nominal number of turns. Advantageously, by providing the extension, the turns of the contact element can be twisted or distorted to create more turns than the nominal number of turns in the non-mounted and inserted state. Advantageously, by providing the extension, the distortion of the turns is further preferably defined such that in the inserted state it can form the given minimum diameter of the through-passage.

[0052] In an exemplary form, the contact element is taken to comprise a plurality of turns configured substantially the same. Each turn comprises, for example, a holding portion, a first extending portion, a first supporting portion, a second supporting portion, and a second extending portion. A first radial portion is disposed between the holding portion and the first extending portion. A second radial portion is disposed between the first extending portion and the first supporting portion. A third radial portion is disposed between the first supporting portion and the second supporting portion. A fourth radial portion is disposed between the second supporting portion and the second extending portion. As an example, the radial portions each form a transition between adjacent straight portions that are adjacent to each other and form an angle with each other.

[0053] In an exemplary plane of view in the circumferential direction of the contact element, the turns can be described as having the first and second supporting portions as a roof, with the walls of the house formed by the first and second extending portions contacting this, and the holding portion forming the floor.

[0054] In the non-inserted state, the turns are radially aligned, and for example, a through-passage for guiding a long component (not shown thereby) is formed by the supporting portion.

[0055] The contact element is compressed radially, for example when inserted into the chamber of a cable gland. The distance between the support parts, or between the first and second support parts of adjacent windings, is smaller than the distance between the windings in the non-inserted state due to the radial compression within the chamber. In one form, the support parts of the windings contact each other, or the gap between the support parts is completely closed. The diameter of the through-passage opening is minimized, for example by compression. Despite the radial compression, the windings are substantially radially aligned. The radial alignment is determined by the bisector of the angle enclosed by the winding or the first and second extending parts. In an exemplary form where the windings are radially aligned, the bisector of the angle between the extending parts substantially coincides with the radius of the contact element. By way of example, the contact element has an attachment diameter D of about 13 mm E , a radially extending part E of about 4.5 mm r , and a wire diameter D of about 1 mm D and comprises 12 windings. This approximately corresponds to the nominal number of windings.

[0056] For example, when a long component is arranged within the through-passage opening of the contact element inserted into a cable gland, the contact element is in the mounted state. The windings are deformed by the long component such that the bisector of the angle formed by the alignment or the extending parts is aligned at an angle with respect to the radius of the contact element. The long component expands the diameter of the through-passage opening to the outer diameter of the long component, which is not specified here. Also by way of example, the long component arranged within the through-passage opening deforms the windings such that they contact each other at least within the range of the support parts.

[0057] Preferably, the above-described contact element is used for electrical contact to components having a shielding function and / or a current propagation function.

[0058] In one form, the contact element is intended to be used for attachment to a component having a rotationally symmetric inner wall, such as a cylindrical or conical inner wall. Alternatively, the inner wall may be configured in the shape of a torus or a double cone, or may have other rotationally symmetric forms. Preferably, the contact element is intended to be used for insertion into a component having a chamber, preferably a cable gland, and more preferably as will be described hereinafter.

[0059] In one exemplary form, the contact element is intended to be used for insertion into the chamber of a component of a cable gland. For example, the cable passes through the chamber, and the exposed shield of the cable contacts the contact element, electrically connecting the shield to the component. Also proposed is the use of a contact element for contacting a component having a shielding function and / or a current-carrying function.

[0060] According to the present invention A cable gland is proposed that comprises a component and at least one contact element. The contact element comprises a plurality of windings of substantially the same geometric shape, each winding comprising a holding part for electrically contacting the contact element, at least one support part for electrically contacting the shield of a long component, and first and second extending parts each extending in a straight line. The first and second extending parts connect the holding part to the at least one support part. Preferably, the contact element is configured as described above.

[0061] Preferably, the cable gland comprises a nipple, such as a double nipple. Also, the nipple is advantageously a component that houses the contact element. The component preferably comprises a chamber having an inner wall that supports the contact element. Also, the holding part is preferably supported by the inner wall of the component. The inner wall of the component is preferably configured in a cylindrical shape. Also, the vertical axis of the component, particularly the vertical axis of the component with a cylindrical inner wall, preferably extends parallel to, preferably coinciding with, the central longitudinal axis of the attached contact element.

[0062] The contact element deforms when inserted into the component. The contact component in the mounted state is inserted into the component such that the holding part 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 contact element when not inserted. Preferably, the contact element is at least partially compressed radially when attached to the component. Also, in the non-inserted state, the holding part arranged on a plane at an angle of about -50° to about +50° with respect to the central longitudinal axis of the through-opening of the contact element is aligned substantially parallel to the central longitudinal axis in the mounted state.

[0063] In one form, the cable gland comprises a component having a chamber restricted radially with respect to the central longitudinal axis by an inner wall and axially along the central longitudinal axis by at least one circumferential shoulder, at least partially. The at least one shoulder can be configured as a discrete reduction in the inner diameter of the component. Also, the at least one shoulder can be configured as a wall. Preferably, the at least one shoulder configured as a wall is flat with the component on the outside at one end or forms a boundary within the component. The at least one, at least partially radially circumferential shoulder is preferably in the shape of an insertion opening through which the contact element can be inserted into the chamber. Preferably, the contact element is compressed radially to be inserted through the insertion opening into the chamber. Also, the contact element preferably relaxes within the chamber to prevent the contact element from slipping out of the chamber by at least one shoulder.

[0064] In one form, the first and / or second extension is to contact at least partially at least one circumferential shoulder. Preferably, electrical contact is provided between the first and / or second extension and at least one circumferential shoulder.

[0065] In one form, the shoulder of the component is configured to axially limit or support the contact element during movement of the contact element. In one form, the shoulder is provided with a radially extending portion. Preferably, the radially extending portion is an extension from the inner wall of the component to the radially inner end of the shoulder. The radially extending portion preferably has a ratio of about 2.5 to about 7, preferably about 3 to about 5, more preferably about 3.5 to about 4.5, relative to the wire diameter of the contact element. In one form, the wire diameter is about 0.5 mm to about 5 mm, preferably about 1 mm to about 2 mm.

[0066] In one form, at least one retaining portion of at least one contact element, preferably a plurality of retaining portions, more preferably all retaining portions, is configured to abut against or be supported by the inner wall of the component of the cable ground. In one form, the contact element is deformed by a chamber, preferably by the inner wall of the chamber, such that the side surface of the envelope of the contact element adapts to the shape of the inner wall. Preferably, the retaining portion is supported by the inner wall such that the envelope of the retaining portion assumes the shape of the inner wall. For example, the inner wall can be cylindrical or conical in shape. Preferably, the inner diameter of the chamber is smaller than the outer diameter of the contact element in the non-inserted state.

[0067] In one form, the windings are configured to be radially aligned in the inserted state. In a further form, the windings in a state of being inserted into a component, particularly a component having a cylindrical inner wall, are configured to be aligned at an angle with respect to the radius relative to the central longitudinal axis.

[0068] In one form, the alignment of the windings in the inserted state is configured to deviate from the radius relative to the central longitudinal axis by about ±6° to about ±50°, preferably about ±6° to about ±30°, more preferably about ±8° to about ±25°. In a further form, the alignment of the windings in the mounted state through which a long component passes is configured to deviate from the radius relative to the central longitudinal axis by about ±10° to about ±80°, preferably about ±10° to about ±75°, more preferably about ±20° to about ±70°.

[0069] By passing a long component through a chamber into which a contact element is inserted, the bending of the winding with respect to the radius, preferably the bending of all windings, is preferably increased compared to the state of being inserted into such a component.

[0070] In one form, at least one contact element is housed within a chamber of a component having at least one male thread, and at least one long component is to be guided through the component. In one form, the chamber of the component is to house two or more contact elements. In a further form, the component is to comprise a plurality of chambers into which at least one contact element can be inserted respectively. In a further form, the cable ground is to comprise a plurality of components for respectively receiving at least one contact element.

[0071] In one form of a cable ground having at least one long component, at least one long component is at least partially disposed within the chamber together with at least one contact element, and the cable ground and at least one long component constitute an attached state, in which state at least one support portion of each winding of at least one contact element at least partially abuts against the shield of the long component, and the winding is to be deviated from the radial alignment. At least one long component is guided through a through-passage of at least one contact element. The winding preferably makes electrical contact with the long component, particularly the stripped portion of the long component.

[0072] Preferably, by attaching the elongate component to the contact element, the winding aligns at an angle with respect to the radius relative to the central longitudinal axis. Preferably, the winding is pushed into contact with the elongate component so as to move radially with respect to the central longitudinal axis and align. Preferably, when the outer diameter of the contact element in the inserted state without the elongate component is smaller than the inner diameter of the component, the winding is pushed into contact with the elongate component so that the winding moves radially with respect to the central longitudinal axis and away from the central longitudinal axis. Preferably, when the elongate component passes through the passageway of the contact element inserted into the component, the alignment of the winding changes. For example, if the winding is radially aligned before the elongate component passes through, the winding moves or deforms so as to align at an angle with respect to the radius relative to the central longitudinal axis as the elongate component passes through. For example, if the winding is aligned at an angle with respect to the radius relative to the central longitudinal axis before the elongate component is inserted, inserting the elongate component causes the winding to change such that the winding moves or deforms so that the angle with respect to the radius relative to the central longitudinal axis increases.

[0073] In one form, the elongate component has an elongate component diameter that is greater than or equal to the diameter of the passageway of the contact element inserted into the component without the elongate component. Preferably, the elongate component contacts the support portion of the winding and / or the radial portion between the first and second support portions.

[0074] An exemplary cable gland comprises a pressure screw, a sealing element, a component, and an O-ring. By way of example, the contact element is disposed within the component. The pressure screw can be screwed into the component, whereby the sealing element can be compressed and can adhere closely around the elongate component. The O-ring can seal the cable gland with respect to the connection shape into which the cable gland is inserted.

[0075] As an example, the contact element is held within the chamber of the component by a radially circumferential shoulder. The chamber is restricted radially with respect to the central longitudinal axis by an inner wall and axially along the central longitudinal axis by a radially circumferential shoulder. For example, the second extension contacts the shoulder. By the shoulder electrically contacting the second extension of the contact element, advantageous conduction of current can be achieved. The holding part contacts, for example, the inner wall of the chamber. By the holding part electrically contacting the inner wall of the chamber, advantageous dissipation of current can also be achieved. With the exemplary form of the contact element, the inner surface of the chamber is optimally utilized for current dissipation.

[0076] In a further exemplary form, a long component, such as a cable, is inserted into a cable ground. The exemplary long component comprises a stripped portion having an exposed shield. The shield electrically contacts the contact element within the chamber. Due to the shape of the contact element, such as a spring, and in particular by providing the first and second extensions, the contact element is configured to be torsionally rigid during attachment of the long component so that tilting of the contact element within the chamber is prevented, especially when a particularly flexible long component is inserted.

[0077] Also proposed is the use of the above-described cable ground for electrically contacting at least one shield of at least one long component.

[0078] Even more advantageous forms are shown in the following drawings. However, the forms shown in the drawings should not be construed as limiting, rather the features described in the drawings, together with each other and with the features described above, 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 components, or components having the same function, are provided with the same reference signs.

[0079] Figure 1 shows a cross-sectional view taken along line I-I of FIG. 2 passing through the contact element 10. The contact element 10 includes twelve windings 12 that are substantially identically configured, and only one of the windings 12 is labeled for clarity. Each individual winding 12 includes a holding portion 14, a first extending portion 18, a first supporting portion 16, a second supporting portion 17, and a second extending portion 19. A first radial portion that is not visible when viewed from the rear of the winding is disposed between the holding portion 14 and the first extending portion 18. A second radial portion 20.2 is disposed between the first extending portion 18 and the first supporting portion 16. A third radial portion 20.3 is disposed between the first supporting portion 16 and the second supporting portion 17. A fourth radial portion 20.4 is disposed between the second supporting portion 17 and the second extending portion 19. The radial portions 20.1 to 20.4 each form a transition between adjacent straight portions 14, 18, 16, 17, 19 that are adjacent to each other and form an angle with each other.

[0080] In the plane of view, the winding 12 can be described as being in the shape of a house, and the first and second supporting portions 16, 17 can be described as the roof, to which the walls of the house consisting of the first and second extending portions 18, 19 are adjacent, and the holding portion 14 can be seen to form the floor.

[0081] Figure 2 shows a top view of the contact element 10 of FIG. 1 in a non-inserted state. The windings 12 are aligned radially, whereby a passage opening 24 through which a long component (not shown) can be guided is formed by the supporting portions 16, 17.

[0082] Figure 3 shows an isometric view of the contact element 10 of FIG. 1. The contact element 10 includes twelve windings 12, 112 that are identically configured, and not all of them are labeled for clarity. From the isometric view, it can be seen that the first extending portion 18 is adjacent to the holding portion 14. The first supporting portion 16 is adjacent to the first extending portion 18, and the first extending portion 18 is then adjacent to the second supporting portion 17. The second supporting portion 17 is adjacent to the second extending portion 19, and the second extending portion 19 is then adjacent to the holding portion 114 of the next winding 112. In this way, the holding portion 14, the first extending portion 18, the first supporting portion 16, the second supporting portion 17, and the second extending portion 19 are successively arranged in contact with each other.

[0083] Figure 4 shows a top view of the contact element 10 of FIG. 2 in the inserted state. The chamber into which the contact element 10 is inserted is not shown in this figure for clarity. By inserting into the chamber, the contact element 10 is compressed radially. The diameter 28 of the through-port 24 is minimized by the compression. Despite the radial compression, the winding 12 is substantially radially aligned. The radial alignment is determined by the bisector of the angle 26 formed by the winding 12 or the first and second extensions 18, 19. In FIG. 4 where the winding 12 is radially aligned, the bisector of the angle 26 substantially coincides with the radius 30 of the contact element. The twelve windings 12 of the contact element have an attachment diameter D of about 13 mm E , a radial extension E of about 4.5 mm r , and a wire diameter D of about 1 mm D , which generally corresponds to the nominal number of windings.

[0084] Figure 5 shows a top view of the contact element 10 of FIG. 2 in the mounted state. The elongate part 60 is disposed within the through-port 24 of the contact element 10. The winding 12 is deformed by the elongate part 60 such that the bisector 27 of the angle 26 formed by the alignment or extensions 18, 19 is at an angle with respect to the radius 30 of the contact element 10. The elongate part 60 enlarges the diameter 28 of the through-port 24 to the outer diameter of the elongate part 60, which is not clearly labeled here.

[0085] Figure 6 shows an exploded view of the cable gland 50 having the contact element 10 of FIG. 2. The cable gland 50 includes a pressure screw 70, a sealing element 72, a part 52, and an O-ring 74. The contact element 10 is disposed within the part 52. The pressure screw 70 can be screwed into the part 52, whereby the sealing element 72 is compressed and can be in close contact with the periphery of an elongate part (not shown). The O-ring 74 can seal the cable gland 50 against a connection shape (not shown).

[0086] Figure 7 shows a cross-sectional view of the cable gland 50 of FIG. 6. The contact element 10 is held within the chamber 53 of the component 52 by a radially circumferential shoulder 58. The chamber 53 is radially bounded by an inner wall 54 from a central longitudinal axis 22 and axially along the central longitudinal axis 22 by the radially circumferential shoulder 58. The second extension 19 contacts the shoulder 58. Advantageous current conduction can be achieved by the shoulder 58 being in electrical contact with the second extension 19. The retaining portion 14 contacts the inner wall 54 of the chamber 53. Advantageous current conduction can also be achieved by the retaining portion 14 being in electrical contact with the inner wall 54 of the chamber 53. Due to the configuration of the contact element 10, the inner surface of the chamber 53 is optimally utilized for current dissipation.

[0087] Figure 8 shows a cross-sectional view of the cable gland 50 of FIG. 6 together with an elongate component 60. The elongate component 60 has a stripped portion where the shield 62 is exposed. The shield 62 is in electrical contact with the contact element 10 within the chamber 53 of the component 52. Due to the spring-like shape of the contact element 10, particularly by providing the first and second extensions 18, 19, the contact element 10 is resistant to torsion such that during attachment of the elongate component 60, the inclination of the contact element 10 within the chamber 53 is prevented.

[0088] Figure 9 shows a cross-sectional view of the cable gland 50 of FIG. 7 in the region between the radially circumferential shoulder 58 and the contact element 10. The contact element 10 disposed within the chamber 53 can be seen.

[0089] Figure 10 shows an X-X cross-sectional view of an alternative contact element 10 having 40 windings 12, with only one winding labeled for clarity. The winding 12 comprises a retaining portion 14, a first extension 18, a first support portion 16, a second support portion 17, and a second extension 19, these portions being adjacent to each other in this order.

[0090] Figure 11 shows a top view of the contact element of FIG. 10 in a non-inserted state. A distance 29.1 is provided between windings 12.1, 12.2 within the region of the support portions not labeled for clarity, or between the radial portions 20.1, 20.2 between the first and second support portions.

[0091] FIG. 12 shows a top view of the contact element 10 of FIG. 11 in the inserted state. The distance 29.2 between the radial portions 20.1, 20.2 between the support portions not marked for clarity or between the first and second support portions of the windings 12.1, 12.2 is smaller than the distance 29.1 of FIG. 11 or is completely closed by radial compression in a chamber not shown.

[0092] FIG. 13 shows a top view of the contact element 10 of FIG. 11 in the mounted state. A long component (not shown) disposed within the through-passage 24 deforms the winding 12 such that they contact each other within the scope of the support portion 16.

[0093] FIG. 14 shows an exploded view of an alternative cable gland 50 having the contact element 10 of FIG. 11. The cable gland 50 includes a pressure screw 70, a sealing element 72, a component 52, and an O-ring 74. The contact element 10 is disposed within a chamber 53 of the component 52. The pressure screw 70 can be screwed onto the male thread 56 of the component 52, whereby the sealing element 72 is compressed and can be in close contact with the periphery of a long component (not shown). The O-ring 74 can seal the cable gland 50 against a connection configuration (not shown).

[0094] FIG. 15 shows a cross-sectional view of the cable gland 50 of FIG. 14, in which view the contact element 10 is disposed within the chamber 53 of the component 52 held by the circumferential shoulder 58. The extension 19 is supported by the shoulder 58.

[0095] FIG. 16 shows a cross-sectional view of the cable gland 50 of FIG. 14, in which view the contact element 10 is disposed within the chamber 53 of the component 52 held by the circumferential shoulder 58. The extension 19 is supported by the shoulder 58. A long component 60 is disposed within the cable gland 10, and the shield 62 of the long component 60 is in electrical contact with the contact element 10.

[0096] FIG. 17 shows a cross-sectional view taken along line XVII-XVII of the cable gland 50 of FIG. 15. The contact element 10 is disposed within the chamber 53.

[0097] connect The contact element 10 , ca can be conveniently inserted into the cable duct 50, whereby, when attaching the elongate part 60, in particular the flexible elongate part 60, to the cable duct 50, the tilting and the unintentional twisting of the contact element 10 are prevented. Also, the proposed shape of the contact element 10 advantageously provides the largest possible electrical contact surface with the part 52.

Claims

1. A component (52) and at least one contact element (10), wherein the at least one contact element (10) comprises a plurality of windings (12) having substantially the same geometric shape, and each winding (12) has a holding portion (14) for electrically contacting the component (52) surrounding the contact element (10), at least one first and second support portion (16, 17) for electrically contacting a shield (62) of a long component (60), and first and second extending portions (18, 19), and the holding portion (14), the first extending portion (18), and the at least two support portions (16, 17) are arranged successively, and the first and second support portions (16, 17) are adjacent cable grounds (50).

2. The cable ground according to claim 1, wherein the first and / or second extending portions (18, 19) extend in a straight line.

3. The cable ground (50) according to claim 1, wherein the holding portion (14), the first extending portion (18), the second extending portion (19), and / or the at least one first and second support portions (16, 17) are arranged substantially in a straight line.

4. The cable ground (50) according to claim 1, wherein a radial portion (20) is formed between the holding portion (14) and the first and second extending portions (19), and / or between the at least one first and second support portions (16, 17) and the first and second extending portions (18, 19).

5. The cable ground (50) according to claim 1, wherein the first support portion (16) and the second support portion (17) are generally of the same length.

6. The cable ground (50) according to claim 1, wherein the contact element (10) has a ring-shaped or toroidal shape.

7. The cable ground (50) according to claim 1, wherein the contact element comprises a component (52) having a chamber (53) radially with respect to a central longitudinal axis (22) by an inner wall (54) and limited along the central longitudinal axis (22) by at least one circumferential shoulder (58).

8. The cable ground (50) according to claim 7, wherein the first and / or second extending portions (18, 19) are at least partially in contact with at least one shoulder (58) and / or an end wall that is at least partially circumferential.

9. The cable ground according to claim 1, wherein at least one holding portion (14) of at least one contact element (10) is in contact with an inner wall (54) of a component (52) of the cable ground (50).

10. The cable ground (50) according to claim 1, wherein at least one contact element (10) is received in a chamber (53) of a component (52) having at least one male thread (56), and at least one elongate component (60) can be guided through the component (52).

11. The cable ground (50) according to claim 1, having at least one elongate component (60) at least partially disposed within the chamber (53) together with at least one contact element (10), wherein the cable ground (50) and the at least one elongate component (60) form an assembled state, and in the assembled state, at least one support portion (16, 17) of each winding of the at least one contact element (10) is at least partially in contact with a shield (62) of the elongate component (60), and the winding (12) is displaced from a radial alignment.

12. Use of the cable ground (50) according to any one of claims 1 to 11 for making electrical contact with at least one shield of at least one elongate component.

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