Component to which a cable can be secured with strain relief

Abstract

A component (1) to which a cable (2) can be secured in a strain-relieved manner comprises a body (10) that forms an opening (100) into which the cable (2) can be inserted. A first clamping element (11) and a second clamping element (12) are arranged on the body (10) and are adjustable relative to each other along a clamping direction (K) in order to reduce the cross-sectional area of ​​the opening (100) for clamping the cable (2) in the opening (100). The first clamping part (11) and the second clamping part (12) are held in an open position in which the cable (2) can be inserted between the first clamping part (11) and the second clamping part (12) along the clamping direction (K) and can be moved from the open position into the clamping direction (K) to approach each other in order to reduce the opening cross-section of the opening (100) for clamping the cable (2) in the opening (100).

Description

2. The clamping parts are held in position relative to each other along the clamping direction and can be moved closer together from the open position along the clamping direction to reduce the opening cross-section. 5. To attach a cable to the component, the cable can be inserted into the opening of the body so that the cable lies in the opening in a mounted position. To provide strain relief for the cable relative to the body of the component, the clamping parts are adjustable relative to each other along the clamping direction, so that by adjusting the clamping parts the opening cross-section is reduced and thus the cable inserted into the opening can be clamped relative to the body and thereby secured to the body. To simplify the insertion of the cable into the opening and between the terminal parts, the terminal parts are held in the open position along the clamping direction at a position relative to each other at a distance of 15°.The clamping parts can be adjusted relative to each other along the clamping direction in order to bring them closer together and thus reduce the opening cross-section for clamping the cable. In the open position, however, the clamping parts are held in such a position relative to each other that they cannot approach each other without conscious action, thus making it easier to insert a cable between them. The clamping elements are thus fixed relatively relative to each other in the open position. When attaching a cable, a user does not need to take any special measures to keep the 25 clamping elements spaced apart and thus be able to insert the cable between them. This results in simplified assembly, where the cable can be easily inserted into the opening and between the clamping elements (which are in the defined open position).30 In one embodiment, the component has at least one fastening element which is fixed axially to the first clamping part along the clamping direction, but is rotatable relative to the first clamping part. The fastening element, for example designed as a screw, is fixed axially (translatorically) to the first clamping part such that the fastening element is held in position axially along the clamping direction on the first 35 clamping part. The fastening element can, however, be rotated relative to the first clamping part, in particular to change the position of the first clamping part and the second clamping part relative to each other by rotating the fastening element BE2024 / 5867 3. In one design, at least one fastening element is screwed into the second clamping part or into at least one counter element arranged on the second clamping part in the open position.This holds the first and second clamping parts in position relative to each other, whereby the first and second clamping parts can be brought axially closer together along the clamping direction by rotating at least one fastening element. Because at least one fastening element is fixed axially along the clamping direction to the first clamping part and a counter element arranged at least one on the second clamping part is screwed into it, at least one fastening element, in a straight rotational position (screw position), causes the first and second clamping parts to be held axially close to each other along the clamping direction. The fastening element is the second clamping part or a counter element arranged at least one on the second clamping part, for example a nut, screwed in, so that the first clamping part and the second clamping part, viewed along the clamping direction, are held at a distance from each other via the at least stone fastening element.If the fastening element is rotated on the first clamping part, the axial position of the first clamping part and the second clamping part changes relative to each other due to the threaded connection between the fastening element and the second clamping part or the counter element arranged on the second clamping part, so that the clamping parts can be brought closer together, especially along the clamping direction, in order to clamp a cable inserted into the opening of the body on the component and thus fix it to the component in a relieved manner. In one embodiment, the first clamping part has at least one first receiving opening and the at least one fastening element has a head. The head of the at least one fastening element is received in the at least one first receiving opening 30 and is axially fixed in the at least one first receiving opening along the clamping direction. The head of the fastening element can, for example, be rotationally symmetrical with respect to the clamping direction and is therefore rotatable in the associated receiving opening 35.BE2024 / 5867 4 For example, at least one receiving opening is bounded by a base. A locking element projects into at least one receiving opening. The head is arranged axially between the base and the locking element and is thereby axially fixed along the clamping direction relative to the first clamping part. The head of at least one fastening element is received in the associated receiving opening on the first clamping part and is thereby axially (translationally) fixed in the receiving opening, possibly with a certain amount of play, by the head occupying an intermediate position between the base and the locking element. The locking element can, for example, be designed as a projection 10 projecting into the receiving opening.To attach the fastening element to the first clamping part, the head is inserted into the corresponding receiving opening of the clamping part and locks, for example, with the undercut-forming locking element, so that the head comes into an axially (translationally) fixed position within the receiving opening and the fastening element is thus axially (translationally) fixed relative to the first clamping part, but is rotatable about the clamping direction. In one embodiment, at least one fastening element has a shaft extending axially along the clamping direction from the head, which extends through a through-opening in the base and, in the open position, is screwed into the second clamping part or at least a counter element arranged on the second clamping part. The shaft can, in particular, be designed as a threaded shaft and thus has an external thread.The fastening element is screwed into the second clamping part or into a counter element arranged on the second clamping part via the shaft, so that the fastening element is in threaded connection with the second clamping part or a counter element arranged on the second clamping part via the 25 shaft. In one embodiment, at least one counter element is axially fixed to the second clamping part along the clamping direction and is held rotationally fixed relative to the second clamping part. The at least one fastening element is preferably screwed into the at least one counter element in the open position. By rotating at least one fastening element relative to the at least one counter element, the first clamping part and the second clamping part can be brought axially closer to each other along the clamping direction. Such a counter element can, for example, be designed by a threaded nut into which an associated fastening element with a threaded shaft is screwed. The counter element is arranged axially and rotationally fixed to the second clamping part.In the open position, the clamping parts are held axially in position relative to each other along the clamping direction by the fastening element screwed into the respective corresponding counter element, because the fastening element is axially fixed to the first clamping part and the counter element is axially fixed to the second clamping part. By rotating the fastening element, the position of the clamping parts screws relative to each other can be changed, so that the clamping parts are brought closer together and a cable inserted between the clamping parts can be clamped to the component. Preferably, at least one counter element has a threaded opening into which at least one fastening element is screwed. The fastening element can, in particular, have a threaded shank that carries an external thread which engages with an internal thread in the threaded opening, so that by rotating the fastening element relative to the counter element, an axial movement of the fastening element relative to the counter element is also effected.In one embodiment, the second clamping element has at least two receiving openings. The counter element is received in the second receiving opening and is axially fixed along the clamping direction and also rotationally fixed in the second receiving opening. The counter element can, for example, have a non-rotationally symmetrical shape with respect to the clamping direction, such as a polygonal shape, for example a hexagonal shape. The second receiving opening can be shaped complementarily to the shape of the counter element, so that the counter element is positively locked in the associated receiving opening with respect to rotation around the clamping direction and is thereby rotationally fixed in the receiving opening. For example, the second receiving opening is bounded by a base. A locking element projects into the second receiving opening.The counter element is arranged axially between the base and the locking element and is thereby fixed axially along the clamping direction relative to the second clamping part 35. The counter element is received in the associated receiving opening on the second clamping part and is thereby fixed axially (translationally) in the receiving opening, BE2024 / 5867 6, possibly with a certain amount of play, by the counter element occupying an intermediate position between the base and the locking element. The locking element of the second clamping part can, for example, be designed as a projection extending into the receiving opening. To arrange the counter element on the second clamping part, the counter element is inserted into the associated receiving opening of the second clamping part and locks, for example, with the locking element forming an undercut, so that the counter element reaches an axially (translationally) fixed position within the receiving opening and the counter element is thus axially (translationally) fixed relative to the second clamping part.10 In one embodiment, the body of the component has a first clamping opening and a second clamping opening. The first clamping part is arranged in the first clamping opening. The second clamping part, on the other hand, is arranged in the second clamping opening. The first clamping part and the second clamping part are each adjustable in their respective clamping opening 15 along the clamping direction. The respective clamping opening can, for example, be formed as a recess in the body of the component. The associated clamping part lies in the respective clamping opening and is adjustable along the clamping direction relative to the body. 20 In one embodiment, the cable can be inserted into the opening of the body along a longitudinal axis, wherein the first clamping opening and the second clamping opening, viewed along the longitudinal axis, are each bounded by a collar of the body and a bottom of the body. The respective clamping part 25 is received between the collar and the bottom, so that the clamping part is supported along the longitudinal axis relative to the body.Along the longitudinal axis, the clamping elements are thus fixed relative to the body of the component, so that a tensile load on the cable can be absorbed via the clamping elements clamped to the cable and transferred into the body of the component. 30 In one embodiment, the first clamping opening and the second clamping opening each open into the opening of the body, so that the first clamping element from the first clamping opening and the second clamping element from the second clamping opening can each be adjusted into the area of ​​the opening of the body in order to reduce the opening cross-section of the 35 opening for clamping the cable in the opening. The respective clamping opening is open to the opening shaped on the other side of the body, so that the respective BE2024 / 5867 7 The clamping element in the clamping opening can be adjusted so that the respective clamping element protrudes into the area of ​​the opening and thus reduces the opening cross-section in order to clamp a cable inserted into the opening of the body on the component.5 In one embodiment, the first clamping opening and the second clamping opening are separated from each other by at least one web, viewed along the clamping direction. Thus, at least one web extends between the first and second clamping openings. For example, a through-opening can be formed on the web, through which a fastening element extending between the first and second clamping parts is extended. The web and the through-opening formed in the web thus provide a guide for the fastening element, so that the clamping parts are supported on the body of the component transversely to the clamping direction. 15 In one embodiment, the body has at least two first stop elements. The first and second clamping parts each have at least one second stop element.Each second stop element is designed to cooperate with an associated first stop element and thereby limit an adjustment travel of the first clamping part in the first clamping opening and of the second clamping part in the second clamping opening against the clamping direction. In the area of ​​each clamping opening, one or more first stop elements are formed in the body, which cooperate with one or more second stop elements on the clamping part associated with the respective clamping opening. The stop elements jointly limit an adjustment travel of the clamping parts outwards, i.e., against the clamping direction in the direction of moving the clamping parts away from each other. By having at least one second stop element, which is designed to cooperate with an associated first stop element on Because the body is trained, no clamping part can be moved outwards beyond a certain position.30 If the stop elements are in the open position of the clamping parts in pairs in a system with each other, the position of the clamping parts relative to the body is thereby defined and fixed, so that the clamping parts in the open position assume a defined position relative to the body and the opening formed therein and thus a cable can be inserted into the opening of the body in 35 simpler, in a manner unhindered by the clamping parts. BE2024 / 5867 8 For example, in the area of ​​each clamping opening on the base and the collar, a first stop element projecting into the clamping opening can be formed, which interacts with an associated second stop element on the respective clamping part. In a maximally outwardly displaced position of the respective clamping part, the stop elements are in contact with each other, so that the respective clamping part cannot be displaced further outwards. In one embodiment, the first clamping part and the second clamping part are designed as identical parts.The first clamping part and the second clamping part are, for example, each formed as 10 plastic molded parts and are identical in their structural design. In one embodiment, the component is a cable gland part for screwing onto a mating gland part. The component may, for example, have a thread for screwing onto the mating gland part. For example, component 15 is a so-called cable gland nut, which can be screwed onto a mating gland part in the form of a threaded stud to attach the cable gland part to the mating gland part. The mating gland part may be attached to an associated assembly, for example, a housing or a housing adapter. 20 The component, particularly in the case of clamping parts in the open position, can be supplied by a manufacturer to a customer so that the user can easily attach a cable to the component and clamp it to the component for strain relief.25 The underlying concept of the invention will be explained in more detail below with reference to the embodiment shown in the figures. They show: Fig. 1 a view of a component in the form of a cable gland part with a body and clamping parts arranged thereon; Fig. 2 an exploded view of the arrangement according to Fig. 1; Fig. 3 a separate view of the body of the component; Fig. 4 a separate view of a clamping part; BE2024 / 5867 9 Fig. 5 a partial sectional view of the component along line C-C according to Fig. 1; Fig. 6 a partial sectional view of the component along line D-D according to Fig. 1; Fig. 7A a frontal view of the clamping part with the fastening elements arranged thereon; Fig. 7A a sectional view along line A-A according to Fig. 7A; 10 Fig. 7C the sectional view in a perspective representation; Fig. 8A a frontal view of the other clamping part with the counter-elements arranged on it; 15 Fig. 8 Legs sectional view along line B-B according to Fig. 8A; Fig. 8C the sectional view in a perspective representation; Fig.Fig. 9A a view of the component in an open position of the clamping parts; Fig. 9 leg view of the component with clamping parts approaching each other to reduce the cross-section of an opening formed in the body; and Fig. 10 a schematic view of the component with an associated counter-screw part. A component 1 shown in an embodiment in Figs. 1 to 9A, 9B implements a cable gland part which – as shown in the schematic view according to Fig. 1030 – can be screwed onto a hollow cylindrical counter-screw part 4 and thereby fixed to an assembly 3, for example a housing or a housing adapter of a higher-level assembly, for example a connector part, a control cabinet or an electrical system. 35 The component 1 has a threaded section 101 with an internally formed thread, via which the component 1 can be screwed onto the counter-screwing part 4 and in addition BE2024 / 5867 10 can be brought into a threaded connection with an external thread on the counter-screwing part 4.Component 1 has a body 10 in which an opening 100 is formed into which a cable 2 can be guided along a longitudinal axis, as can be seen in Fig. 1 in conjunction with Fig. 10. In an assembled position, the cable 2 extends along the longitudinal axis through the body 10, with component 1 in the form of the cable gland part being screwed onto the counter-screw part 4 and the cable 2 also extending through the counter-screw part 4. 10 Two clamping parts 11, 12 are arranged on the body 10, which can be adjusted along a clamping direction K perpendicular to the longitudinal axis L relative to the body 10 and can be moved towards each other in the clamping direction K in order to reduce the opening cross-section of the opening 100 on the body 10 and thus clamp a cable 2 inserted into the opening 100 relative to the body 10. 15 Fig. 9A shows the clamping parts 11, 12 in an open position in which the clamping parts 11, 12 are separated from each other in such a way that the opening cross-section of the opening 100 is at least largely cleared.9B shows the clamping parts 11, 12 in a position in which the clamping parts 11, 12 are moved towards each other, so that the 20 opening cross-section of the opening 100 is narrowed in order to clamp a cable 2 inserted into the opening 100 in the opening 100 and thus to fix it in a relieved manner relative to the body 10. In both illustrated embodiments, two fastening elements 13 in the form of screws are arranged in a first clamping part 11. The clamping part 11 forms two receiving openings 111 on a clamping body 110, in each of which a head 130 of an associated fastening element 130 is received. A shaft 131 extending longitudinally from the head 130 extends through a through-opening 114 in a base 116 of the clamping part 1130 that limits the respective receiving opening 111. As can be seen from Fig. 6 in conjunction with the views according to Fig.As can be seen from 7A to 7C, the head 130 is positively engaged in the respective receiving opening 111 with reference to the clamping direction between the base 116 and two locking elements 112 projecting into the area of ​​the receiving opening 111 from a surrounding wall 35 and is thereby axially (translatively) fixed with reference to the clamping direction in the respective receiving opening 111. The head 130 can be rotated in the receiving opening 111 and thus the fastening element 13 can be rotated relative to the clamping part 11. On a second clamping part 12, two counter-elements 14 in the form of 5 nuts are arranged, each of which is received in an associated receiving opening 121 on a clamping body 120 of the second clamping part 12. The counter-elements 14 each have a threaded opening 140 which aligns with a through-opening 124 on a base 126 of the receiving opening 121. 10 As shown in Fig. 6 in conjunction with the views according to Fig.As can be seen from Figures 8A to 8C, the counter elements 14 are positively locked between the base 126 and two locking elements 122 projecting into the area of ​​the associated receiving opening 121 with respect to the clamping direction K, and are thereby axially (translationally) fixed with respect to the clamping direction K and the respective associated receiving opening 121 15. Because the counter elements 14 each have a polygonal shape deviating from rotational symmetry (a hexagonal shape in the specific embodiment shown) and the receiving openings 121 are shaped complementarily to the counter elements 14, a positive locking also exists rotationally around the clamping direction K, so that the counter elements 14 are rotationally fixed relative to the clamping body 120 of the clamping part 12. The fastening elements 13 which are fixed to the clamping part 11 by their heads 130 are screwed into the counter elements 14 by their shafts 131, as can be seen from Fig. 1 in conjunction with the sectional view according to Fig. 25 6.Each clamping element 11, 12 lies in an associated clamping opening 102, 103 on the body 10 of the component 1, as can be seen in Fig. 2. Each clamping opening 102, 103 is here – viewed along the longitudinal axis L – bounded on one side by a circumferential, annular collar 107 and on the other side by a base 108 of the body 10. The clamping elements 11, 12 are received between the collar 107 and the base 108 and are thereby axially fixed relative to the body 10 with reference to the longitudinal axis L, along which the cable 2 is to be inserted into the opening 100. 35 The clamping direction K is perpendicular to the longitudinal axis L. In the clamping direction K, the clamping parts 11, 12 in the clamping openings 102, 103 can be moved towards each other. BE2024 / 5867 12 Against the clamping direction K, the clamping parts 11, 12 in the clamping openings 102, 103 are maximally adjusted outwards when the clamping parts 11, 12 are in the open position according to Fig. 9. The ring-shaped circumferential collar 107 is connected to the base 1085 via two webs 104. The webs 104 separate the clamping openings 102, 103 from each other.In each web 104 a through-opening 105 is formed, through which an associated fastening element 13 extends, as can be seen in Fig. 1 in conjunction with Fig. 2. The fastening elements 13 are thus guided on the 10 webs 104, so that the assembly of the clamping parts 11, 12 is supported by the fastening elements 13 guided on the webs 104 transversely to the clamping direction on the body 10. In the area of ​​each clamping opening 102, 103, stop elements 106 are formed. Each clamping opening 102, 103 is assigned two stop elements 106, one of which is arranged on the base 108 and one on the collar 108, and which are each formed as locking projections and project into the respective clamping opening 102, 103. Each clamping part 11, 12 has recesses 113, 123 on its opposite sides, facing away from each other and towards the base 108 or the collar 107, respectively, which are each bounded by a stop element 115, 125 in the form of an edge.The stop elements 106, 115, 125 interact together, so that the adjustment path of each clamping part 11, 12 in the associated clamping opening 102, 103 is limited against the clamping direction K (outwards) and a maximum outwards adjusted position of each clamping part 11, 12 on the body 10 is defined by abutting stop elements 106, 115 or 106, 125 against each other. In the open position, the fastening elements 13 are screwed into the counter elements 1430. Because the fastening elements 13 are axially (translatively) fixed to the clamping part 11 with their heads 130, and the counter elements 14 are also axially (translatively) held to the clamping part 12, the clamping parts 11, 12 are held in position relative to each other along the clamping direction in the open position. The fastening elements 13 here define the distance between the clamping parts 11, 12 in the open position. BE2024 / 5867 13 In the open position, the clamping parts 11, 12 are here spaced apart from each other such that the opening cross-section of the opening 100 is at least largely free, as shown in Fig.9. As is evident, a cable 2 can be inserted into the opening 100 in one of the clamping parts 11, 12 without obstruction and thus arranged on the component 1. 5. To fix the cable 2 to the component 1 in a relieved manner, the fastening elements 13 can be screwed further into the counter elements 14, so that the axial position of the clamping parts 11, 12 changes relative to each other along the clamping direction and the clamping parts 11, 12 are moved towards each other. The cable 210 is thus clamped on the body 10 and locked in the opening 100. In the open position of the clamping parts 11, 12, the stop elements 106, 115 or 106, 125 are preferably in pairs in contact with each other, as can be seen from the sectional view according to the figure.