Housing with strain relief for one cable

Abstract

Housing for an electronic product which has a cable (7) for an electrical connection, wherein the housing (1) comprises a first housing part (2) and a second housing part (3), and has a strain relief (4) for the cable (7) which is formed from a first clamping jaw (5) and a second clamping jaw (6) between which the cable (7) is guided, and wherein the strain relief (4) is designed such that when the housing parts (1, 2) are assembled, the two clamping jaws (5, 6) are moved relative to each other in order to clamp the cable (7), characterized in that the first housing part (2) has an opening in a side wall (20) for passing through the cable (7) or an interface (8) for connecting the cable (7), and that the second housing part (3) has a section (30),which extends beyond the side wall (20) of the first housing part (2) with the opening for the cable (7) and to which the first clamping jaw (5) is attached.

Description

The present invention relates to a strain relief housing for a cable according to the main claim.In the case of electrical components which have a cable connection to a housing part, such as power electronics or other high-voltage components for partially or fully electrified vehicles, for example, the ground of the cable must be intercepted after a specific distance from the housing, depending on the manufacturer's specification. Such a strain relief serves for protecting the housing interface (e.g. for ensuring tightness requirements) and furthermore for protecting the components located in the housing from the action of force from the outside via the cable.WO 03 / 067715 A1 discloses a housing having a first and second housing part and a strain relief device. In this case, the cable is clamped between a first and a second clamping jaw. However, the disadvantage here is the lack of spray protection.US 2015 / 0138785 A1 describes a housing comprising a base having a bottom and four side walls arranged to form a first open box-like structure, wherein the first side wall is provided with a cable guiding slot at a periphery of the first side wall.DE 298 15 495 U1 discloses a cover for lines of a device, wherein the cover is provided in one piece with at least one clamping lip which interacts with a line feedthrough which forms a counterpart to the clamping lip in such a way that clamping points are formed as a strain relief for lines to be introduced, wherein the cover can be latched to the housing.DE 81 37 939 U1 shows a housing for electrical components which are connected to an electrical connecting cable, in the form of a cup open at the top for receiving the component, the connecting cable being guided through the side wall of said cup. The cup has a cup widening formation forming a chamber into which the connecting cable is inserted and in which it is held by a relief device.It is the object of the invention to specify a housing with strain relief for a cable which additionally has a splash guard in the region of the connection of the cable to the housing.This object is achieved with the housing according to the features of the applicable patent claim 1. Advantageous embodiments are the subject matter of dependent claims.The invention is based on a housing for an electronic product, which housing has a cable for an electrical connection, wherein the housing comprises a first housing part and a second housing part, and has a strain relief for the cable, which strain relief is formed from a first clamping jaw and a second clamping jaw between which the cable is guided, and wherein the strain relief is removed in such a way that, during the assembly of the housing parts, the two clamping jaws are moved relative to one another in order to clamp the cable. The invention is distinguished in that the first housing part has an opening in a side wall for the cable to pass through or an interface for connecting the cable. Furthermore, the second housing part has a section which projects beyond the side wall of the first housing part with the cable feedthrough opening and to which a clamping jaw is fastened.The second housing part, which usually serves as a cover, forms a splash guard for the cable passage opening or the cable connection interface to the housing.An advantage of the invention is furthermore that by fastening a clamping jaw to the second housing part, assembly steps for fastening the cable to the housing can be saved.Expediently, a clamping jaw is screwed or glued to the second housing part.In one embodiment of the invention, a clamping jaw and the second housing part are formed in one piece. As a result, on the one hand, assembly steps during the production of the housing can be saved, on the other hand, components which construct the housing can be saved.The two clamping jaws are expediently screwed together. However, it is also possible for the two clamping jaws to be glued or to be connected by clamping means.The invention is explained in more detail below with reference to figures. The following are shown: FIG. 1 shows, by way of example, a housing with a first housing part, a housing interface and a cable and a first clamping jaw of a strain relief device according to the invention, FIG. 2 shows, by way of example, a housing having a first and second housing part, a housing interface, a cable and a strain relief device according to the invention.FIG. 1 shows a housing 1 with a first housing part 2, which first housing part 2 serves to receive an electrical device, for example a transmission or motor control device (not shown). The first housing part 2 has a side wall 20 on which an aperture (not shown) for at least one cable 7 is provided. This opening essentially serves to allow the cable 7 to be guided from the outside into the interior of the housing 1 in order to be contacted there correspondingly on the electrical device. The cable 7 is fastened to the side wall by means of a housing interface 8. Such a housing interface 8 is understood below to mean an arrangement by means of which it is possible to connect a cable 7 to a housing 1 and the terminals of an electrical device located therein. The housing interface 8 is expediently fastened to the side wall 20 by means of screws 40. The housing interface 8 thus forms the transition between the outer region and the interior of the housing 1.The strain relief 4 according to the invention comprises a first jaw 5 and a second jaw 6 (Fig. 2). The first clamping jaw is not shown in FIG. 1. FIG. 1 shows the second clamping jaw 6. the second clamping jaw 6 has a recess 9, as a result of which a shell-shaped receptacle is formed, into which the cable 7 can be inserted. Furthermore, the second clamping jaw 6 has a passage 50 for a fastening means 40, for example a screw, by means of which the second clamping jaw 6 can be fastened to the first clamping jaw (not shown in FIG. 1 ) and to the second housing part (not shown in FIG. 1 ).FIG. 2 shows a housing 1 according to the illustration in FIG. 1 In addition, a second housing part 3 is illustrated in FIG. 2. This second housing part 3 essentially serves as a cover for the first housing part 2 and is expediently screwed to the first housing part 2. Expediently, a seal (not shown) is provided between the first housing part 2 and the second housing part 3, whereby the penetration of moisture into the housing 1 can be prevented.A section 30 of the second housing part 3 projects beyond the region of the side wall 20 of the first housing part 2 at which the passage for the at least one cable 7 or the housing interface 8 is provided. On the underside 60 of the second housing part 3, i.e. on the side of the second housing part 3 which faces the at least one cable 7, a first clamping jaw 5 is arranged. Expediently, this first clamping jaw 5 can be fastened to the second housing part 3 by means of, for example, screws 40, or the first clamping jaw 5 is integrated into the second housing part 3, as a result of which the first clamping jaw 5 and the second housing part 3 are formed integrally, for example by means of injection molding or die casting.The first clamping jaw 5 is substantially mirror-image to the second clamping jaw 6 and likewise has a shell-shaped recess 9 for receiving the at least one cable 7. The cable 7 is clamped by the connection of the first clamping jaw 5 and the second clamping jaw 6.The portion 30 of the second housing part 3 which projects beyond the region of the side wall 20 of the first housing part 2 at which the housing interface 8 for the at least one cable 7 is located forms a splash guard for this housing interface 8. Furthermore, a considerable saving in space is created by the integration of the first clamping jaw 5 into the second housing part 3 or by the fastening of the first clamping jaw 5 on the side 60 of the second housing part 3 facing the cable 7 to be held. The integrated strain relief 4 of the housing 1 according to the invention does not increase the dimensions of the housing 1. This allows integration of the housing 1 into or onto a motor or transmission.From FIGS. 1 and 2, two first clamping jaws 5 and second clamping jaws 6 can be seen by way of example. Of course, depending on the application, several pairs of first and second clamping jaws 5, 6 can also be used.By way of example, the clamping jaw pairs comprising first clamping jaws 5 and second clamping jaws 6 are arranged in such a way that the cable 7 does not have a bending radius between the housing interface 8 or between the two clamping jaw arrangements. However, it is possible that a bending radius can be specified to the cable 7 by the arrangement of the clamping jaw pairs without a stress thereby arising on the cable 7 in the region of the housing interface 8.Reference numerals denote reference numerals1 Housing 2 First housing part 3 Second housing part 4 Strain relief 5 First clamping jaw 6 Second clamping jaw 7 Cable 8 Housing interface 9 Recess 20 Side wall of the first housing 30 Overlapping section 40 Screws 50 Bushing 60 Underside of the second housing part

Claims

Housing for an electronic product, which has a cable (7) for an electrical connection, wherein the housing (1) comprises a first housing part (2) and a second housing part (3), and has a strain relief (4) for the cable (7), which strain relief is formed from a first clamping jaw (5) and a second clamping jaw (6) between which the cable (7) is guided, and wherein the strain relief (4) is constructed in such a way that, during the assembly of the housing parts (1, 2), the two clamping jaws (5, 6) are moved relative to one another in order to clamp the cable (7), characterized in that the first housing part (2) has an opening for the passage of the cable (7) or an interface (8) for the connection of the cable (7), in that the second housing part (3) has a section (30), which projects beyond the side wall (20) of the first housing part (2) with the opening for the passage of the cable (7) and to which the first clamping jaw (5) is fastened.Housing according to claim 1, characterised in that the first clamping jaw (5) and the second clamping jaw (6) are screwed together.Housing according to claim 1 or 2, characterised in that the first clamping jaw (5) and the second housing part (6) are formed in one piece.

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