Crimp connectors for connecting a cable with a cable shield to an electronic assembly

Abstract

Crimp connector (1) for connecting a cable (2) having a cable shield (22) to an electronic assembly (3), wherein the crimp connector (1) has a hollow cylindrical inner sleeve (11) with an interior (111) extending in the longitudinal direction (L) and forming a cable entry, and a hollow cylindrical outer sleeve (12) circumferentially surrounding the inner sleeve (11), wherein a cylindrical free space (13) is provided radially between the inner sleeve (11) and the outer sleeve (12), which is designed to receive the cable shield (22) of the cable (2) when the cable (2) is passed through the interior (111) of the inner sleeve (11), wherein the outer sleeve (12) and the inner sleeve (11) are designed to be fixed together by plastic deformation of at least the outer sleeve (12), so that the cable shield (22) received in the free space (13) is held against the inner sleeve (11) can be fixed,wherein the inner sleeve (11) and / or the outer sleeve (12) has a connection section (112) at a longitudinally (L) end insertion side (S1) with which the crimp connector (1) can be fixed to the electronic assembly (3), wherein the outer sleeve (12) has a pull-in aid (122) at a plug-in end section, which is designed to facilitate pulling the outer sleeve (12) over the inner sleeve (11), wherein the pull-in aid (122) is formed by a chamfer which surrounds a plug-in inner edge of the outer sleeve (12).

Description

The invention relates to a crimp connector for connecting a cable having a cable shield to an electronic assembly, which is in particular a printed circuit board.In the prior art, it is usually provided to solder a cable shield of a cable directly to the electronic assembly or to soldering pads provided for it when the cable or its wires are connected to an electronic assembly.However, the problem here is that the separate soldering of the cable shielding with the associated preliminary work is very time-consuming and usually has to be carried out directly on the electronic assembly. In particular, when manufacturing a plurality of electronic assemblies or connecting a plurality of cables with a cable screen to the electronic assembly(s), it is also the case that a high process reliability cannot be achieved by the individual soldering of the cable screens, since errors which result from the high proportion of manual and small-part work repeatedly occur or can occur.Further crimp connectors or at least aspects of crimp connectors are known, for example, from the publications DE 11 2017,002 344 T5, US 2020 / 0 274 263 A1, US 2015 / 0 024 626 A1, DE 10 2017,009 370 A1 and US 2015 / 0 075 862 A1.The object of the invention is therefore to overcome the aforementioned disadvantages and to provide a crimp connector for connecting a cable having a cable shield to an electronic assembly or to a printed circuit board, by means of which the cable and in particular the cable shield can be connected easily, reliably and quickly to the electronic assembly or to contacts of the electronic assembly provided for this purpose.This object is achieved by the combination of features according to claim 1.According to the invention, a crimp connector for connecting a cable having a cable shield to an electronic assembly is proposed for this purpose. The crimp connector can also be referred to as a crimp terminal or cable shield crimp terminal. The electronic assembly is preferably a printed circuit board, wherein the electronic assembly or printed circuit board can provide a shielding connection for connecting the cable shield, such that the crimp connector is preferably suitable for connecting the cable shield to the latter or for conductively connecting the latter. According to the invention, the crimp connector also has a hollow cylindrical inner sleeve with an inner space extending in the longitudinal direction and forming a cable passage, and a hollow cylindrical outer sleeve encircling the inner sleeve in the circumferential direction. The longitudinal direction preferably refers to a longitudinal direction or longitudinal axis of the inner or outer sleeve, which in the assembled state are substantially coaxial. Likewise, the circumferential direction refers in each case to a circumferential direction about the longitudinal axis of the inner or outer sleeve. During the assembly of the crimp connector or of the cable set explained later, the inner sleeve can be arranged in the outer sleeve or the outer sleeve can be arranged around the inner sleeve. In order to be able to guide a cable through the interior space forming the cable feedthrough, the cable extends in particular along the entire longitudinal axis of the inner sleeve, so that the interior space has an opening at each of its ends opposite in the longitudinal direction and is surrounded or bounded in the circumferential direction by the inner sleeve. Furthermore, it is provided that a free space is provided in the radial direction between the inner sleeve and the outer sleeve, which free space is likewise formed cylindrically by the inner and outer sleeves determining the free space. The free space is therefore determined in particular by an outer diameter of the inner sleeve and an inner diameter of the outer sleeve. Furthermore, the free space is designed to receive the cable shield of the cable when the cable is passed through the interior of the inner sleeve, so that the cable shield can therefore be arranged in the free space. Preferably, the cable screen can be arranged in the free space so as to surround the inner sleeve substantially completely in the circumferential direction. The outer sleeve and the inner sleeve are configured to be fixed to one another by a plastic deformation of at least the outer sleeve, in particular by crimping or crimping or generally by squeezing or squeezing. In this case, only the outer sleeve or both the outer sleeve and the inner sleeve can be deformed. As a result of the plastic deformation, a cable shield accommodated in the free space is clamped between the outer sleeve and the inner sleeve, pressed flat against the inner sleeve and fixed to the inner sleeve or between the outer and inner sleeves. In order to be able to connect the crimp connector to the electronic assembly, in particular with a cable shield fixed thereto, it is further provided that the inner sleeve and / or the outer sleeve has a connection section on an insertion side on the end side in the longitudinal direction, with which connection section the crimp connector or preferably the inner sleeve can be fixed to the electronic assembly.The proposed basic construction results in several advantages over the prior art. First, a cable can already be prefabricated in advance with a crimp connector, so that a unit made of cable and crimp connector, which can also be referred to as a cable set, can be prepared at the factory or before connection to the electronic assembly. Furthermore, the cable shield does not have to be cut open in sections, for example, and pressed together or rolled for soldering, so that complicated mechanical adaptations of the cable shield are omitted. The cable shield is also not connected to the electronic assembly on one side and thus asymmetrically, but rather is connected uniformly to the crimp connector by the encircling planar contact on the inner sleeve, which in turn can be connected to the electronic assembly over a large surface area.If a cable strain relief is permissible via the cable shield and the electronic assembly, a cable strain relief symmetrically distributing the force can thereby be realized at the same time.If the mating section of the electronic assembly corresponds to a hole through the assembly or printed circuit board into which the crimp connector can be inserted, a cable feedthrough through the assembly or printed circuit board is thereby realized at the same time, such that the wires of the cable can be connected to one side of the assembly or printed circuit board and the cable extends through the crimp connector to an opposite side of the assembly or printed circuit board.Although the inner sleeve and the outer sleeve are each hollow-cylindrical, they can in principle also have openings or slots, as long as an intended connection of the cable shield and an intended plastic deformation for connecting the cable shield remain possible.It is assumed below that the connecting portion is formed on the inner sleeve. As taken into account by the main claim, however, the connection section can be provided on the inner sleeve and / or the outer sleeve as long as the crimp connector can be fixed to the electronic assembly by way of the connection section, which establishes an electrical connection between the cable shield and the shielding connection of the assembly.For the advantageous electrical connection of the cable shield to a shielding connection of the electronic assembly, a further possible embodiment of the crimp connector provides that the inner sleeve is designed to be electrically conductive and can be fixed by the connection section on the electronic assembly in connection with a shielding connection of the electronic assembly, so that the cable shield fixed between the outer sleeve and the inner sleeve can be connected to the shielding connection in an electrically conductive manner.For the connection of the crimp connector to the electronic assembly, it is preferably provided that the inner sleeve protrudes beyond the outer sleeve on the insertion side with the connection section, so that the inner sleeve is free radially outwards on the insertion side and can be inserted or inserted into the electronic assembly with the insertion side or the section of the inner sleeve exposed on the insertion side.To simplify the drawing of the cable shield onto the inner sleeve, it is further provided in an advantageous embodiment of the crimp connector that the inner sleeve has an expansion aid for expanding the cable shield over the inner sleeve on an insertion side opposite the insertion side in the longitudinal direction, on which insertion side the cable can be inserted into the inner space of the inner sleeve forming the cable passage. The spreading aid is formed by a chamfer which runs around an insertion-side outer edge of the inner sleeve and can therefore also be referred to as an outer chamfer.In the following, both the inner sleeve and the outer sleeve are referred to as an insertion side and an insertion side, which are opposite one another along the substantially coaxial longitudinal axis. In this case, on the insertion side corresponds to an arrangement which is essential to the insertion side and on the insertion side corresponds to an arrangement which is essential to the insertion side.In order to also facilitate the insertion of the wires of the cable surrounded by the cable shield into and through the cable passage formed by the inner sleeve, the inner sleeve can additionally have, on the insertion side, a chamfer as an insertion aid, which runs around an inner edge of the inner sleeve and can accordingly be referred to as an inner chamfer of the inner sleeve.According to the assembly method described in detail later, it can be provided in particular that the outer sleeve is first pushed over the cable shield during assembly. In order to simplify the pushing on or pulling on of the outer sleeve via the cable shield, the outer sleeve can provide, on the insertion side, a chamfer encircling the insertion-side inner edge of the outer sleeve.Since, according to an advantageous procedure, during the assembly of the crimp connector, the outer sleeve is pulled or slid over the inner sleeve and in particular also over the cable shield already arranged over the inner sleeve, it is provided according to the invention that the outer sleeve has, at an insertion-side end section, a pulling-on aid for facilitating pulling on of the outer sleeve over the inner sleeve and in particular also over the cable shield spread over the inner sleeve and preferably resting circumferentially against the inner sleeve, which is formed by a chamfer which runs around an insertion-side inner edge of the outer sleeve. The chamfer is therefore an insertion-side inner chamfer of the outer sleeve.For a particularly simple connection of the crimp connector to the electronic assembly, the connection section in an advantageous variant of the crimp connector is a latching section, with which the crimp connector can be latched to a counter section or counter latching section provided on the electronic assembly.In this case, it can be provided particularly advantageously that the latching section is formed by a latching nose which extends circumferentially in the radially outward direction.Furthermore, the inner sleeve can have at least one slot or be slotted on the connection section, so that the connection section and in particular the latching section or the latching nose of the latching section are resilient and can be deflected resiliently during a latching process. In particular, at least two slots which are opposite one another and extend as far as the insertion-side end or as far as an insertion-side end face of the inner sleeve are advantageous for this purpose.If the crimp connector is inserted into the electronic assembly, a certain clearance between the crimp connector and the assembly can result in an undefined electrical connection between the cable shield and the electronic assembly or its shielding connection.In order to further improve the electrical connection between the cable shield and a shielding connection of the electronic assembly, it can therefore also be provided that the connection section forms a soldering connection and is designed to be solderable to the electronic assembly or the shielding connection provided for it.Furthermore, the inner sleeve can also have a soldering section, at which the inner sleeve heats up and soldering tin can be introduced into the free space with the cable shield arranged therein, so that, in addition to the plastic deformation, soldering of the cable shield is possible.Alternatively or additionally to soldering the crimp connector to the electronic assembly, it can also be provided, in order to improve the electrical connection, that a spring element is arranged or formed on the connection section, by means of which spring force, which clamps the crimp connector against the electronic assembly, can be exerted on the electronic assembly. If the crimp connector is thus inserted into the electronic assembly, the crimp connector latches, for example, in the electronic assembly, wherein a play of the inner sleeve relative to the assembly in the longitudinal direction, by which a movement of the crimp connector would be possible, is preferably compensated for by the spring force applied by the spring element.In order to be able to fix a defined position of the outer sleeve relative to the inner sleeve and of the inner sleeve relative to the electronic assembly, the inner sleeve according to a further advantageous variant has a projection on the insertion side which protrudes beyond the outer sleeve in the longitudinal direction and points outwards in the radial direction. The projection is preferably designed to be circumferential in the circumferential direction and forms a transition or delimitation between the insertion-side section of the inner sleeve, which section is surrounded by the outer sleeve in the assembled state and can also be referred to as a crimping section, and the insertion-side connection section of the inner sleeve. On the projection or on an insertion-side surface of the projection, the outer sleeve can be brought to bear with an insertion-side end section. Furthermore, the crimp connector can be brought to bear against the projection or an insertion-side surface of the crimp connector on the electronic assembly. Between the projection or its insertion-side surface and the electronic assembly, the spring element can also be provided, which is designed, for example, as a spring ring, which can be supported on the projection or its insertion-side surface on one side and on the other side against the electronic assembly.Furthermore, the projection can also serve as a stop for the cable shield, so that the cable shield rests with a predetermined length against the inner sleeve or can be brought to rest.A further aspect of the invention additionally relates to a set of an electronic assembly, which is preferably a printed circuit board, and a crimp connector according to the invention. The electronic assembly has a counter portion corresponding to the connection portion. The counter section is preferably designed as a round hole into which or through which the connection section of the crimp connector can be inserted, so that a cable lead-through through the electronic assembly is realized at the same time by the crimp connector. Furthermore, a shielding connection is preferably provided on the electronic assembly, which is particularly advantageously formed as a solder pad or an electrically conductive contact surface, which(s) annularly surrounds the counter portion formed as a round hole and can additionally also extend into the hole.In addition, one aspect of the invention relates to a set of a cable and a crimp connector according to the invention, which can also be referred to as a cable set. The cable has a jacket, a cable shield and a cable core, wherein cable core is understood to mean the region of the cable surrounded by the cable shield and the cable core is formed in particular by at least one core. Furthermore, the cable shield is arranged in sections between the inner sleeve and the outer sleeve, which plastically deforms, i.e. is crimped and thereby fixed to one another, so that the crimp connector is firmly connected to the cable shield or the cable.In particular, the cable set can be prefabricated, so that the cable with the crimp connector mounted thereon is thus prepared for later mounting on an electronic assembly. The cable set can also provide a cover, such as a shrink sleeve, which extends from the jacket of the cable as far as the crimp connector and preferably covers the outer sleeve of the crimp connector, so that the crimp connector and the cable shield are covered in a touch-proof manner.Furthermore, one aspect of the invention relates to a method for assembling a cable set from a cable and a crimp connector according to the invention or the cable set explained above. The cable has a jacket, a cable shield and a cable core with at least one core. The jacket encloses the cable shield and the cable core in the circumferential direction. The proposed method comprises at least the following steps: a) removing the cable from the inner sleeve at a portion at the end in the longitudinal direction by removing the sleeve over a predetermined length; b) inserting the cable core into an insertion-side end of the inner chamber of the inner sleeve, wherein the cable shield is spread open and slides over an outer side of the inner sleeve until the at least one core at the insertion side of the inner sleeve slides out of the inner chamber and preferably protrudes from the insertion-side end of the inner sleeve with a predetermined length, wherein the cable shield can also already be extended or spread open at least at the end beforehand; c) pulling the outer sleeve over the inner sleeve and the cable shield arranged around the inner sleeve; d) crimping or squeezing or plastically deforming at least the outer sleeve with the cable shield and the inner sleeve, so that the outer sleeve with the cable shield is fixed to the inner sleeve.The removal of the jacket or the length over which the jacket is removed can be provided as required. Furthermore, the shield can also be shortened at the end side, so that from the end side of the cable with which it is inserted into the crimp connector, a first section of the cable results, which is formed only by the cable core, an adjoining second section, which is formed by the cable core and the cable shield surrounding it, and an adjoining third section, which is formed by the cable core, the cable shield surrounding it and the cable jacket surrounding it.The cable is preferably stripped or stripped to such an extent and inserted or pushed through the inner sleeve to such an extent that the wires of the cable core protrude from the inner sleeve with a predetermined length on the insertion side of the inner sleeve, so that the wires can be connected to the electronic assembly in a provided manner during the assembly of the cable set with the electronic assembly.In addition, one aspect of the invention relates to a method for mounting the cable set on the electronic assembly or on the printed circuit board. According to the method, the crimp connector is inserted with its connection section into the electronic assembly and thereby fixed to the latter. In order to ensure a permanent electrical connection of the cable shield and the shield terminal of the electronic assembly via the crimp connector, it is furthermore provided that the crimp connector is soldered to the shield portion in the region of the connection portion or a spring element is provided on the connection portion of the crimp connector. Subsequently, the wires of the cable protruding from the crimp connector on the plug-in side can be connected to the electronic assembly and in particular by soldering.The features disclosed above can be combined as desired, provided that this is technically possible and they do not conflict with one another.Other advantageous developments of the invention are characterized in the dependent claims or are illustrated in more detail below together with the description of the preferred embodiment of the invention on the basis of the figures. The following are shown: FIG. 1 shows a side view of a crimp connector; FIG. 2 shows a sectional view through the crimp connector according to FIG. 1 ; FIG. 3 is a perspective view of an inner sleeve; FIG. 4 is a perspective view of a crimp connector; FIG. 5 shows assembly steps during the assembly of a cable set.The figures are schematic by way of example. Like reference numerals in the figures indicate like functional and / or structural features.FIG. 1 shows a crimp connector 1, which substantially comprises the inner sleeve 11 and the outer sleeve 12 radially enclosing the inner sleeve. On a first side, which can be referred to as the insertion side S 1, since the crimp connector 1 can be inserted with this side into an electronic assembly 3, the inner sleeve 11 forms a connection section 112 which serves for fixing the crimp connector 1 to the electronic assembly 3. Along the longitudinal axis L, a second side of the crimp connector 1 is opposite the first side, which can be referred to as the insertion side S 2, since a cable 2 or its core 23 can be inserted into the inner sleeve 11 or guided through the inner sleeve 11 on this side.FIG. 2 shows a sectional view of the crimp connector 1, which is depicted along the sectional profile A-A as is shown in FIG. 1 in longitudinal section. It is visible in particular that both the inner sleeve 11 and the outer sleeve 12 are hollow-cylindrical and each have an interior 111, 121 which extends through the respective sleeve 11, 12 in the longitudinal direction L or along the longitudinal axis L. In this case, an inner diameter of the outer sleeve 12 or its inner space 121 (see FIG. 5 b )) is selected with respect to the outer diameter of the inner sleeve 11 such that a free space 13 is formed between the inner sleeve 11 and the outer sleeve 12, in which free space a cable shield 22 of the cable 2 can be arranged during assembly.The perspective view according to FIG. 3 shows an inner sleeve 11 which in the present case corresponds substantially to the inner sleeve 11 according to FIGS. 1 and 2. The perspective illustration shows in particular that the spreading aid 113 designed as an external chamfer, by means of which the cable shield 22 can be pushed more easily onto the inner sleeve 11, runs completely around the insertion-side outer edge of the inner sleeve 11 in the circumferential direction about the longitudinal axis L. The insertion-side inner chamfer running along the inner edge of the inner sleeve 11 can also provide an insertion aid 116, by means of which insertion of the core 23 of the cable 2 or of the cores 24 forming the core 23 is carried out more easily.Furthermore, FIG. 3 also shows in particular the connection section 112, which is designed in the present case as a latching section. For this purpose, a radially outwardly extending latching nose 114 is provided on the plug-in side, which is formed circumferentially on the inner sleeve 11 in the circumferential direction with respect to the longitudinal axis L. The latching nose 114 is formed by a projection which increases in a ramp-like manner in the radial direction from the insertion side S 1 to the insertion side S 2. In order to make it possible for the latching lug 114 to spring in and for the latching lug 114 or the latching section to be subsequently springed out and thus latched into the electronic assembly 3, two slots 117 which run through the connection section 112 in the longitudinal direction or along the longitudinal axis L and are situated opposite one another are provided in the present case, and these slots extend from the end face of the inner sleeve on the insertion side as far as beyond the projection 115, with the result that the latching lug 114 can yield resiliently radially inward when the connection section 112 is inserted into the electronic assembly 3 and can then spring out again in a latching manner with the assembly 3.In order to be able to arrange both the outer sleeve 12 at a defined position on the inner sleeve 11 and the crimp connector 1 in a defined position on the electronic assembly 3, the inner sleeve 11 furthermore provides a projection 115 which forms a transition between the connection section 112 and a section surrounded by the outer sleeve 12 which can also be referred to as a crimp section. The outer sleeve 12 can be brought into contact with the insertion-side lateral surface of the projection 115 when being pushed onto the inner sleeve 11 from the insertion side S 2, so that the position of the outer sleeve 12 along the longitudinal axis L is fixed with respect to the inner sleeve 11. When the crimp connector 1 is inserted, it can abut the electronic assembly 3 with the side face of the projection 115 on the insertion side, so that the positioning of the crimp connector 1 relative to the assembly 3 is also fixed, wherein an intermediate part and in particular also a spring element 14 can be arranged between the projection 115 and the assembly 3, as is illustrated in FIG. 5.FIG. 4 again shows the entire crimp connector 1 with an inner sleeve 11 according to FIG. 3, which is thus again substantially formed analogously to the crimp connector 1 according to FIGS. 1 and 2. As shown, the outer sleeve 12 is now plastically deformed at the crimping points 4, wherein the inner sleeve 11 can also be deformed by the plastic deformation of the outer sleeve 12 in the region of the crimping points 4. The outer sleeve 12 and a cable shield 13 arranged in the free space 13 during assembly are fixed to the inner sleeve 11 by the plastic deformation, so that the crimp connector 1 forms a unit and the crimp connector 1 also forms a unit with a cable 2 arranged thereon during assembly.Such an assembly of a cable set consisting of cable 2 and crimp connector 1 and a subsequent assembly of the cable set on the electronic assembly 3 is illustrated in simplified form by FIG. 5. Since the crimp connector 1 in FIG. 5 is a crimp connector 1 according to FIGS. 1, 2, 3 to 4, not all reference numerals are drawn in for the sake of clarity.FIG. 5 is divided into steps a) to f).Section a) shows a crimp connector 1 as illustrated in FIGS. 1 and 2 in a side view. During assembly, if necessary, the outer sleeve 12 is first removed from the inner sleeve 11 so that they are separate from one another, as shown in section b), wherein sections b) to f) each represent the crimp connector 1 in longitudinal section.Subsequently, a cable 2 is stripped at an end-side section, i.e. the jacket 2 of the cable 2 is removed in this section. Subsequently, the cable shield 22 is cut off or shortened by a predetermined length, so that the cable cores 23 with the cores 24 are exposed.The outer sleeve 12 is slid over the cable 2. Subsequently, as shown in section c), the core 23 of the cable is inserted into the inner space 111 of the inner sleeve 11 and is passed through the inner sleeve 11.In this case, the cable shield 22 reaches the spreading aid 113 and can be spread open by the latter, with the result that the cable shield 22 slides over the inner sleeve 11, as can be seen in section d). Subsequently or simultaneously, the outer sleeve 12 is slid over the inner sleeve 11 with the cable shield 22 arranged thereon or therearound until the outer sleeve 12 abuts with its insertion-side end against the projection 115 of the inner sleeve 11, as is illustrated in section d) of FIG. 5. It can also be provided that the cable shield 22 must also abut the projection 115 on the end side.If the outer sleeve 12 is in the position determined according to section d), the crimp connector 1 or the outer sleeve 12 is plastically deformed, so that the outer sleeve 12 presses radially inward, in particular at the crimping points 4, and squeezes the cable shield 22 between the outer sleeve 12 and the inner sleeve 11, as is shown in section e), so that the cable shield 22 rests flat and circumferentially on the inner sleeve 11 and is in electrical contact therewith.The crimp connector 1 now forms with the cable 2 an integral unit which can only be broken open destructively.Subsequently, the cable unit formed thereby and shown in section e) or the cable set formed thereby can be connected to an electronic assembly 3, which in the present case is a printed circuit board 3.The printed circuit board 3 forms a mating section 31 which corresponds to the connection section 112 of the crimp connector 1 and which in the present case is a round hole which is surrounded by an annular contact surface as shielding connection 32. The contact surface can also extend into the hole forming the counter portion 31.The crimp connector 1 is inserted with its plug-in-side connection section 112 into the mating section 31 of the printed circuit board 3, so that the latching nose 114 latches with the mating latching section formed by the mating section 31.In order to ensure good electrical contact of the inner sleeve 11 with the shielding connection 32, before the crimping connector 1 is inserted into the printed circuit board 3, a spring element 14, which can be a spring ring, can be pushed onto the connection section 112 of the inner sleeve 11, which, as shown in section f), builds up or exerts a spring force between the projection 115 and the printed circuit board 3, such that the latching nose 114 rests flat on the contact surface forming the shielding connection 32. Subsequently and alternatively or additionally to the use of a spring element 14, the crimp connector 1 can be soldered to the contact surface of the shielding terminal 32 so that a solder joint 33 is formed and the electrical contact of the cable shielding 22 via the inner sleeve 11 with the shielding terminal 32 further improves.If contact or buckling protection is to be implemented, a transition region 5 is formed between the cable jacket 21 and the crimp connector 1 during the assembly of the cable set or after the latter a cover implemented, for example, by a shrink sleeve can be attached, which extends from the jacket 21 as far as the crimp connector 1 and in particular covers the transition 5 in a contact-proof manner.The embodiment of the invention is not restricted to the preferred exemplary embodiments given above. Rather, a number of variants are conceivable which make use of the solution shown even in fundamentally different embodiments.

Claims

Crimp connector (1) for connecting a cable (2) having a cable shield (22) to an electronic assembly (3), wherein the crimp connector (1) has a hollow cylindrical inner sleeve (11) with an inner space (111) extending in the longitudinal direction (L) and forming a cable passage and a hollow cylindrical outer sleeve (12) encircling the inner sleeve (11) in the circumferential direction, wherein a cylindrical free space (13) is provided in the radial direction between the inner sleeve (11) and the outer sleeve (12), which free space is configured to receive the cable shield (22) of the cable (2) when the cable (2) is passed through the inner space (111) of the inner sleeve (11), wherein the outer sleeve (12) and the inner sleeve (11) are configured to be fixed to one another by a plastic deformation of at least the outer sleeve (12), such that the cable shield (22) received in the free space (13) can be fixed to the inner sleeve (11), wherein the inner sleeve (11) and / or the outer sleeve (12) has a connection section (112) on an insertion side (S 1) on the end side in the longitudinal direction (L), with which connection section the crimp connector (1) can be fixed to the electronic assembly (3), wherein the outer sleeve (12) has a pulling-on aid (122) on an insertion-side end section, which is designed to facilitate pulling on of the outer sleeve (12) via the inner sleeve (11), wherein the pulling-on aid (122) is formed by a chamfer which runs around an insertion-side inner edge of the outer sleeve (12).Crimp connector according to claim 1, wherein the inner sleeve (11) is designed to be electrically conductive and can be fixed to the connection section (112) on the electronic assembly (3) in connection with a shielding connection (32) of the electronic assembly (3), so that the cable shield (22) fixed between the outer sleeve (12) and the inner sleeve (11) can be electrically conductively connected to the shielding connection (32).Crimp connector according to claim 1 or 2, wherein the inner sleeve (11) protrudes beyond the outer sleeve (12) on the insertion side (S1) with the connection section (112).Crimp connector according to one of the preceding claims, wherein the inner sleeve (11) has, on an insertion side (S2) opposite the insertion side (S1) in the longitudinal direction (L), an expansion aid (113) for spreading the cable shield (22) over the inner sleeve (11), which is formed by a chamfer which runs around an insertion-side outer edge of the inner sleeve (11).Crimp connector according to one of the preceding claims, wherein the connection section (112) is a latching section, with which the crimp connector (1) can be latched to a counter section (31) provided on the electronic assembly (3).Crimp connector according to the preceding claim, wherein the latching section is formed by a radially outwardly directed latching nose (114) which runs circumferentially.Crimp connector according to one of the preceding claims, wherein the connection section (112) forms a soldering connection and is designed to be solderable to the electronic assembly (3).Crimp connector according to one of the preceding claims, wherein a spring element (14) is arranged or formed on the connection section (112), by means of which spring force bracing the crimp connector (1) against the electronic assembly (3) can be exerted on the electronic assembly (3).Crimp connector according to one of the preceding claims, wherein the inner sleeve (11) has, on the insertion side (S1), a projection (115) which projects beyond the outer sleeve (12) in the longitudinal direction (L) and points outwards in the radial direction (R), on which projection the outer sleeve (12) can be brought to bear with an insertion-side end section and with which projection the crimp connector (1) can be brought to bear on the electronic assembly (3).Set of an electronic assembly (3) and a crimp connector (1) according to one of the preceding claims, wherein the assembly (3) has a counter portion (31) corresponding to the connection portion (112).Set of a cable (2) and a crimp connector (1) according to one of the preceding claims 1 to 9, wherein the cable (2) has a jacket (21), a cable shield (22) and a cable core (23) with at least one core (24), wherein the jacket (21) encloses the cable shield (22) and the cable core (23) in the circumferential direction, wherein the cable shield (22) is arranged in the free space (13) between the inner sleeve (11) and the outer sleeve (12) and the outer sleeve (12) is plastically deformed in a fixing manner the cable shield (22) to the inner sleeve (11).Method for assembling a cable set comprising a cable (2) and a crimp connector (1) according to one of claims 1 to 9, wherein the cable (2) comprises a jacket (21), a cable shield (22) and a cable core (23) with at least one core (24), wherein the jacket (21) encloses the cable shield (22) and the cable core (23) in the circumferential direction, wherein the method comprises at least the following steps: a. de-jacketing the cable (2) at an end section in the longitudinal direction (L) by removing the jacket (21) over a predetermined length; b. Inserting the cable core (23) into an insertion-side end of the inner chamber (111) of the inner sleeve (11), wherein the cable shield (22) is expanded and slides over an outer side of the inner sleeve (11) until the at least one core (24) on the insertion side (S1) of the inner sleeve (11) slides out of the inner chamber (111); c. pulling the outer sleeve (12) on over the inner sleeve (11) and the cable shield (22) arranged around the inner sleeve (11); d. plastically deforming at least the outer sleeve (12) with the cable shield (22) and the inner sleeve (11), so that the outer sleeve (12) with the cable shield (22) is fixed to the inner sleeve (11).

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