Plug connector with stress removal element

Abstract

The invention relates to a plug connector having a stress relief element, in which a respective contact (2) of the plug connector is arranged in a contact cavity of a contact carrier (3), the respective contact (2) being fastened to an end of an electrical conductor of a cable (1), by means of a stress relief element, tensile forces and / or compressive forces that can act on the contact (2) by means of the cable (1) are largely or completely blocked from reaching the contact (2), a sleeve (5) is provided, into which the contact carrier (3) is inserted, a first and at least one further stress relief element (61, 62) being inserted within the sleeve (5), the first and at least one further stress relief element (61, 62) being arranged in the sleeve (5), and the first and at least one further stress relief element (61, 62) being arranged between the first and at least one further stress relief element (61, 62) being arranged between the first and at least one further stress relief element (61, 62). According to the invention, the inner contours of the at least two stress relief elements (61, 62) act on the at least one cable (1), preferably a plurality of cables (1), and the stress relief elements (61, 62) are supported on the contact carrier (3) by means of the sleeve (5) in such a way that tensile forces and / or compressive forces acting on the at least one cable (1) are isolated from the contacts (2).

Description

Technical Field

[0001] The invention relates to a plug-in connector with a strain relief element having the features of the preamble of claim 1 . Background Art

[0002] Plug connectors with strain relief elements are known, which largely or completely prevent tensile and / or compressive forces that can act on the contacts via the cable from reaching the contacts. The corresponding contacts of the plug connector are arranged in contact cavities of a contact carrier, wherein the corresponding contacts are attached to the ends of the electrical conductors of the cable. Furthermore, the contact carrier is arranged in a housing. Summary of the Invention

[0003] The object of the present invention is to improve such a plug-type connector, in particular with regard to its assembly and strain relief.

[0004] This object is achieved by the features of claim 1 .

[0005] According to the invention, a sleeve is provided, into which the contact carrier is inserted, wherein a first and at least one further, in particular exactly one, second strain relief component are inserted inside the sleeve, wherein the inner contours of at least two or exactly two strain relief components act on the at least one cable, preferably a plurality of cables, and the strain relief components are supported on the contact carrier via the sleeve in such a way that tensile and / or compressive forces acting on the at least one cable are decoupled from the contacts.

[0006] Preferably, exactly two strain-relief components are used, so that when pressure is applied to the two strain-relief components by the compression sleeve, a particularly uniform pressure effect is produced on the cable installed between them. It is particularly advantageous if the two strain-relief components are designed identically, thereby significantly reducing the number of differently designed strain-relief components.

[0007] The strain relief component is preferably made of plastic and manufactured by a plastic injection molding process. The sleeve can also be made of plastic. Alternatively, if the plug connector needs to have shielding properties, the sleeve can be made of a metal material.

[0008] The strain relief elements are arranged in the sleeve such that they exert pressure on the at least one cable, thereby securing the cable in place and achieving strain relief by means of an interference fit in the sleeve. The interference fit can also be achieved by the sleeve being made of metal and being at least partially deformed, for example, by crimping, after the strain relief elements are inserted. The advantage of the crimping process is that it can be performed very precisely and automatically with a defined deformation of the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The first embodiment and other alternative embodiments are shown in the drawings and described below. DETAILED DESCRIPTION

[0010] Figure 1 An exploded view shows a plug connector connected to at least one cable 1 (two cables are shown here, but more than two cables are possible). The plug connector includes contacts 2, which are inserted into corresponding contact cavities of a contact carrier 3. A locking element 4 may also be provided, which is activated when the contacts 2 are inserted into the corresponding contact cavities of the contact carrier 3. This is a primary locking mechanism known per se. The plug connector also has a sleeve 5 (made of plastic or metal), into which a multi-component strain relief element 6 (described below) can be inserted. The sleeve 5 and its contact carrier 3 are inserted into a housing 7, which may, but not necessarily, be surrounded by a shielding cage 8. Furthermore, a seal 9 is provided, which can be inserted into one end 10 of the housing 7. Furthermore, a closure plug 11 is provided to secure the seal 9 in the end 10 of the housing 7, through which the cable 1 is passed.

[0011] Figure 2 The assembly and operation of the strain relief device are shown. It can be seen here that exactly two parts of the strain relief element 6 are inserted into the sleeve 5, wherein the sleeve 5 is mechanically deformed, in particular squeezed or clamped, so that the parts of the strain relief element 6 exert pressure on the at least one cable 1 and thus achieve tension and / or pressure relief for the contacts 2 in the contact carrier 3. In the assembly sequence shown, the contacts 2 are first arranged at the ends of their respective cables 1 and inserted into the contact cavities of the contact carrier 3. Thereafter, the strain relief parts of the strain relief element 6 are mounted and the sleeve 5 is pushed onto them and preferably fixed to the contact carrier 3. Subsequently, the strain relief is activated, for example by mechanically deforming the sleeve 5 made of metal, for example by crimping it. The at least one cable 1 is either inserted into the strain relief element 6 and inserted into the sleeve together with it, or the strain relief element 6 is inserted into the sleeve 5 and then the at least one cable is passed through the strain relief element 6 inserted into the sleeve 5.

[0012] Figure 3 A first possible configuration of a strain relief element is shown. Two elements 61, 62 are shown here, which have an inner contour with alternating elevations and depressions in the axial direction, so as to achieve good contact with the outer sheath of the cable 1 when the cable is surrounded by the two elements 61, 62 under pressure. The two elements 61, 62 are held together by at least one spring element 63, preferably, as shown, by two spring elements 63.

[0013] For example, the assembly process is as follows: one component 61 is preassembled with another component 62. Then, one component 63 is assembled at the front end and one component 63 is assembled at the rear end (or only one component 63 is assembled from the front end or the rear end). Then, the component assembly is inserted into the sleeve 5.

[0014] After the two parts 61 and 62 are held together by the at least one spring element 63, the cable 1 (optionally also just one cable or more than two cables) can be passed through and inserted into the sleeve 5. After the cable 1 has been passed through, the sleeve 5 is mechanically deformed so that pressure is exerted on the cable 1 by the parts 61, 62 to achieve stress relief. Alternatively, a spring element 63 can be used. Figure 2 The assembly sequence described.

[0015] Figure 4 A second embodiment is shown, in which the two components 61, 62 are constructed in the same manner as in the first embodiment. However, here the spring element 64 is constructed as a sphere, which ensures that when the two components 61, 62 are inserted together into the sleeve 5, the two components do not move relative to each other. The rest of the assembly process is as described above. Figure 3 As stated.

[0016] Figure 5 A third embodiment of the stress relief is shown, wherein the spring element 65 is designed as a wave shape and also achieves that when it is used, the two parts 61, 62 are held together when they are inserted into the sleeve 5. The rest of the assembly process is as above. Figure 3 As stated.

[0017] The spring elements 63 , 64 and 65 have in common that, when they are inserted together into the sleeve 5 , they not only hold the two parts 61 , 62 together, but also, after insertion, they can (but do not necessarily) press the parts 61 , 62 against the inner contour of the sleeve 5 under the action of the spring force.

[0018] Unlike the components 61 and 62 in the three solutions described above, which are held together by corresponding spring elements, Figure 6 Another solution is shown. Here, the corresponding geometric structures of the two parts 61, 62 ensure that the two parts 61, 62 cannot move relative to each other when inserted into the sleeve 5. These corresponding geometric structures are, for example, a recess in one part that cooperates with a corresponding projection on the other part.

[0019] In all four variants shown and described above, the components 61 , 62 have latching tongues which can cooperate with the sleeve 5 and / or the contact carrier 3 and / or the housing 7 for securing.

[0020] As an alternative or in addition to securing the at least two strain relief elements 61, 62 in the sleeve 5 by spring force or latching force or by deformation of the sleeve 5 (e.g., squeezing, in particular crimping), it is conceivable to adhesively bond the strain relief elements 61, 62 into the sleeve 5. This also allows tensile and / or compressive forces to be isolated from the contacts 2 when the sleeve 5 is supported on the contact carrier 3.

[0021] Strain relief element = Strain relief component = Strain relief part.

[0022] List of reference numerals:

[0023] 1 cable

[0024] 2 contacts

[0025] 3 contact carriers

[0026] 4 locking parts

[0027] 5 sleeves

[0028] 6. Strain relief elements

[0029] 61 First Part

[0030] 62 Additional components

[0031] 63 spring element

[0032] 64 spheres

[0033] 65 wave-shaped spring element

[0034] 7 Shell

[0035] 8 shielding cages

[0036] 9 seals

[0037] 10 One end of the housing

[0038] 11 Closing plug.

Claims

1. A plug connector with a strain relief element, wherein: The corresponding contacts (2) of the plug-in connector are arranged in the contact cavity of the contact carrier (3), wherein the corresponding contacts (2) are fixed to the end of the electrical conductor of the cable (1), and by means of a strain relief element: tensile forces and / or compressive forces that can act on the contacts (2) through the cable (1) are largely or completely blocked from reaching the contacts (2), characterized in that a sleeve (5) is provided, into which the contact carrier (3) is inserted, wherein a first and at least one further strain relief component (61, 62) are inserted inside the sleeve (5), wherein the inner contours of at least two strain relief components (61, 62) act on at least one cable (1), preferably a plurality of cables (1), and the strain relief components (61, 62) are supported on the contact carrier (3) via the sleeve (5) so that tensile forces and / or compressive forces acting on the at least one cable (1) are isolated from the contacts (2).

2. The plug connector according to claim 1, characterized in that Exactly two strain relief elements (61, 62) are inserted into the sleeve (5).

3. The plug connector according to claim 1 or 2, characterized in that Two parts (61, 62) are provided as strain relief parts, which have an inner contour with alternating elevations and depressions in the axial extension, so that when the at least one cable is surrounded by the two parts (61, 62) under pressure, the two parts come into good contact with the outer sheath of the at least one cable (1), wherein the two parts (61, 62) are held together by at least one spring element (63), preferably by two spring elements (63).

4. The plug connector according to claim 1 or 2, characterized in that Two parts (61, 62) are provided as strain relief parts, the two parts having an inner contour with alternating projections and depressions in the axial extension, so that when the at least one cable is surrounded by the two parts (61, 62) under pressure, the two parts form good contact with the outer sheath of the at least one cable (1), wherein the two parts (61, 62) are held together by at least one spring element configured as a ball (64), wherein the ball (64) ensures that the two parts (61, 62) do not move relative to each other when the two parts are inserted together into the sleeve (5).

5. The plug connector according to claim 1 or 2, characterized in that Two parts (61, 62) are provided as strain relief parts, the two parts having an inner contour with alternating projections and depressions in the axial extension, so that when the at least one cable is surrounded by the two parts (61, 62) under pressure, the two parts form good contact with the outer sheath of the at least one cable (1), wherein the two parts (61, 62) are held together by at least one spring element (65) configured in a wave shape, wherein the spring element (65) ensures that the two parts (61, 62) are held together when the two parts are inserted into the sleeve (5).

6. The plug connector according to claim 1 or 2, characterized in that Two parts (61, 62) are provided as strain relief parts, the two parts having an inner contour with alternating projections and depressions in the axial extension, so that when the at least one cable is surrounded by the two parts (61, 62) under pressure, the two parts come into good contact with the outer sheath of the at least one cable (1), wherein the two parts (61, 62) have corresponding geometric structures and the corresponding geometric structures of the two parts (61, 62) ensure that the two parts (61, 62) do not move relative to each other when inserted into the sleeve (5).

7. Plug connector according to any one of the preceding claims, characterized in that The sleeve (5) is inserted into the housing (7) together with its contact carrier (3).

8. The plug connector according to claim 7, characterized in that The housing (7) is surrounded by a shielding cage (8).

9. The plug connector according to claim 7 or 8, characterized in that A seal (9) is provided which is inserted into one end (10) of the housing (7).

10. The plug connector according to claim 9, characterized in that A closing plug (11) is provided, which fixes the seal (9) in the end (10) of the housing (7) and through which the at least one cable (1) is passed.

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