CN110121816B

CN110121816B - Plug with shielding contact tongues arranged axially in front of contact elements

Info

Publication number: CN110121816B
Application number: CN201880005613.0A
Authority: CN
Inventors: K.卡瓦; L.特帕斯; A.克莱因克
Original assignee: Escha Bauelemente GmbH
Current assignee: Escha Bauelemente GmbH
Priority date: 2017-01-09
Filing date: 2018-01-08
Publication date: 2021-03-12
Anticipated expiration: 2038-01-08
Also published as: DE202017100060U1; CN110121816A; EP3566266A1; EP3566266B1; WO2018127580A1; DK3566266T3

Abstract

The invention relates to a plug having a contact carrier (2) which carries a plurality of contact elements (1) which can be connected or connected in each case to the core of a cable and which extend in the direction of a plug axis (A), and having a shielding contact arrangement which is designed with a plurality of discrete shielding contact tongues (3) which extend on a first circular arc about the plug axis (A) and which extend in the direction of the plug axis (A). According to the invention, the shielding contact tongue (3) has a radially outwardly directed contact spring (4) in an end section located in front of the contact element (1) and the contact carrier (2) in the direction of the plug axis (A), said contact spring being freely cut out of a substantially rectangular end section, in the case of a design with a respective annularly encircling window (9). The invention also relates to a plug arrangement having a plug of the aforementioned type and a corresponding plug adapted thereto.

Description

Plug with shielding contact tongues arranged axially in front of contact elements

Technical Field

The invention relates to a contact carrier which supports a plurality of contact elements which are respectively connectable or connectable to the core wires of a cable and which extend in the direction of a plug axis, and to a shielded contact arrangement which is designed with a plurality of discrete shield contact elements which extend on a circular arc around the plug axis and extend in the direction of the plug axis, in particular are curved around the plug axis.

Prior Art

DE 10335609 a1 describes a shielded plug, the shielding contact arrangement of which has a plurality of individual contact tongues which are distributed uniformly around the contact carrier and which bear against the cylindrical side wall of the contact carrier.

GB 2066591 describes a metal strip bent into a cylinder, which has contact springs projecting radially outwards and is fixed to the cylindrical side wall of a contact carrier.

Disclosure of Invention

The object of the invention is to provide a plug with which electrical currents or signals can be transmitted via its contact elements and with which high currents can be transmitted via its contact shield, in particular for lightning conduction.

The object is achieved by the invention described in the claims, wherein the dependent claims not only represent advantageous developments of the invention described in the independent claims, but can also form independent solutions to the object.

Firstly and basically, it is provided that the plug has a contact carrier. The contact carrier is preferably made of plastic or another electrically insulating material and carries a plurality of contact elements extending in the direction of the plug axis, which contact elements make electrical contact with corresponding contact elements when the plug is plugged with a corresponding plug. The shielding contact arrangement extends on a first circular arc line around the plug axis radially outside the contact element. The shield contact arrangement forms a plurality of individual shield contact tongues. Each shield contact tongue has an end section which is arranged axially in front of the contact carrier and the contact element. The end section has a contact spring directed radially outward. A plug configured in this way is able to transmit signals via contact elements which can be brought into contact with mating counter-contact elements. The shielding contact device is connected to the cable shielding, through which the core of the cable is shielded from interfering fields. Interference currents and especially those caused by lightning strikes can be conducted into the ground by the shielding of the cable. The shield contact tongue piece designed by the invention extends into the gap of the corresponding plug. The counter-plug has a central region in which the counter-contacts are arranged. The indentation for inserting the shield contact tongue may be an indentation in the metal body surrounding the corresponding contact carrier of the corresponding plug. The metal body is grounded by a suitable method. The wall of the recess forms a contact surface with which the contact spring of the end section of the associated shielding contact region is in contact. The contact springs are designed such that they point radially outward. Provision can also be made for the contact spring to be cut out of the end section of the shield contact tongue, forming a corresponding window. The end section of the shield contact tongue preferably has a rectangular plan view contour. The shield contact tongues are preferably arranged in a uniform circumferential distribution around the plug axis and extend in the axial direction, wherein they are curved around the plug axis. The shield contact tongues thus extend along the cylindrical side. The shield contact tongues can be formed by axially extending tabs of the sleeve body or of webs bent into the sleeve, wherein the sleeve body or webs are encapsulated by the injection-molded plastic of the contact carrier. Between the four shield contact tongues, which are preferably arranged uniformly around the plug axis, there are provided projections of the contact carrier which project radially outwards. These protrusions may be identical to each other. Preferably, however, the projections differ from one another and form positioning projections (Codiernase) by means of which the plug can be plugged together with the corresponding plug only in a defined rotational position. The counter-plug preferably has a recess into which the head of the plug can be inserted, wherein the wall of the recess has a positioning recess (codiresenehmung) into which the positioning projection can enter. When the plug and the counter-plug are plugged together, the shielding contact tongues, which protrude axially freely beyond the end face of the contact carrier, first enter the associated slots of the counter-plug. In a further development of the invention, it is provided that the contact elements are contact pins or contact sleeves, wherein the contact pins can be inserted into the contact sleeves of the respective plug or the contact pins of the respective plug can be inserted into the contact sleeves of the plug. The contact element is preferably arranged in a recess of the contact carrier, wherein the recess can be surrounded by an annular edge. The recess is preferably a pot-shaped recess into which the base carrying the contact element of the counter-plug can enter when the plug and the counter-plug are mated. The contact spring of the plug projects from the bottom of the pocket and has an axial length that is less than the axial depth of the pocket such that its free end is disposed within the pocket. The contact spring is connected to the shield contact tongue by a bent edge, which extends along the edge of the window. The folding edge preferably extends substantially perpendicularly to the plug axis and extends in the circumferential direction. The bent edges of all shield contact tongues arranged around the plug axis therefore preferably extend over a circular arc or form a secant-shaped section of a circular arc. The substantially flat side of the contact spring is connected to the bending line, the contact spring being oriented obliquely to the plug axis. The second free side of the contact spring is connected to the vertex line, which is likewise formed by a fold line. The angular crest line extends on a radially outer circumferential line. It is the second circular arc line, and its radius is greater than the radius of first circular arc line. The free ends of the free sides of the contact springs are rounded. In a preferred embodiment, the plug has a handle on its side opposite the shield contact tongues, which handle extends in the direction of the plug axis and can be formed by a flat section and has an opening at its end. Preferably, the cable extends at an acute angle to the handle or plug axis. In the region of the head of the plug from which the shield contact tongues project, the plug has a circular profile, wherein the plug axis extends through the center of the head.

The invention also relates to a plug arrangement consisting of a plug and a counter-plug, wherein the head of the plug can be inserted into a recess of the counter-plug. The bottom of the recess of the corresponding plug is preferably formed by an electrically conductive contact plate having a contact cutout extending around the base, into which contact cutout the shielding contact tongue can be fitted. The base of the corresponding plug is fitted into the recess of the plug, so that the contact elements of the plug can be brought into electrically conductive contact with the contact elements of the corresponding plug. The axial length of the shield contact tongues and the material thickness of the contact plate are preferably matched to one another in such a way that the side of the free end of the contact spring facing away from the shield contact tongues rests against the rear edge of the contact plate and thus not only an electrically conductive connection is formed between the shield contact tongues and the contact plate, but also a latching connection is formed. When the shield contact tongue is inserted into the contact opening, the side of the contact spring which is directed toward the free end of the shield contact tongue acts as a ramp, so that the contact spring deforms about the bending line when inserted into the contact opening until the vertex of the angle between the two sides of the contact spring enters the contact opening. In the fully inserted state, the vertex of the angle between the two sides of the contact spring is preferably located on the side of the contact plate which points away from the recess of the corresponding plug.

Drawings

Embodiments of the present invention are described below with reference to the accompanying drawings. In the drawings:

figure 1 shows a perspective view of a plug according to the invention and of a corresponding plug,

figure 2 shows an enlarged view of detail II in figure 1,

figure 3 shows a side view of the plug in a further enlarged manner,

figure 4 shows an end-side view of the plug,

figure 5 shows a cross-sectional view according to the line V-V in figure 4,

figure 6 shows the corresponding plug in a perspective partly cut-away view,

figure 7 shows the corresponding plug in a second perspective cut-away view,

figure 8 shows a cross-sectional view according to line VIII-VIII in figure 7,

figure 9 shows a cross-sectional view IX-IX in figure 11,

figure 10 shows the section X-X in figure 11 of a plug inserted in the corresponding plug 20,

fig. 11 shows a cross-section according to section line XI-XI in fig. 9.

Detailed Description

The plug shown in the figures is used in particular as a plug for connecting signal lines to a corresponding plug of a wind power plant. A cable 16 is received in the plug, the cable having an outer cover and a shield disposed below the outer cover. The shield surrounds at least three core wires, each of which is connected to a contact element 1 in the plug housing. In this embodiment five contact elements are provided. The shield is connected to a shield plate, which constitutes four shield contact tongues 3.

The contact element 1 is designed in the present embodiment as a contact pin and projects from the bottom of a cup-shaped recess 14 having a circular rim 15. An imaginary plug axis a extends through the center of the bottom of the pocket 14. The edge 15 extends on a circular arc line around the plug axis a. The recess 14 has a substantially flat bottom 18 from which the contact element 1 protrudes. The free end of the contact element 1 is located in the recess 14. The axial length of the contact element 1 is smaller than the depth of the recess 14, i.e. the distance between the edge 15 and the bottom 18.

The shield contact mount is formed by a plate bent into a cylinder or by a cylindrical body, which likewise extends in a circular arc about the plug axis a. The sleeve-shaped section of the shielding contact carrier is injected into the contact carrier 2 made of plastic.

Four metallic shield contact tongues 3 arranged in a circular arc line project from the end face of the contact carrier 2. The shield contact tongues 3, which have a substantially rectangular contour, project beyond the end side of the contact carrier 2. The shield contact tongues 3 are thus cantilevered in the direction of the plug axis a in front of the contact carrier 2 and in particular in front of the opening of the recess 14 and the end of the contact element 1.

The shield contact tongues 3 are distributed uniformly over the circumference around the plug axis a, between which projections of metal respectively project. In this embodiment, the projections are configured differently from one another and constitute the positioning lugs 10, 11, 12, 13. The

positioning tabs

11, 13 are formed as mirror images in the end side view. The positioning lugs 10 and 12 extending between the

lugs

11 and 13 differ in the thickness of the cut surface measured in the circumferential direction.

Each of the plurality of shield contact tongues 3 has a curved shape and a contact spring 4 that is arched radially outwards.

The contact spring 4 has two roof-like

bent sides

6, 8 which meet at a vertex 7. The side edge 6 is connected by a bent edge 5 to the edge of a window 9 of the shield contact tongue 3 facing away from the contact element 1, from which window 9 the contact spring 4 is stamped out by stamping or the like. The free ends of the side edges 8 resiliently pivot into the windows 9 when radial pressure is applied to the apex lines 7.

A handle 17, which has a flat shape and has a circular hole at its free end, projects from the head of the plug, which head has a circular contour and forms the contact carrier 2, on the side opposite the shield contact tongues 3. The cable 16 projects from the handle 17 at an acute angle to the plug axis a. The plugs shown in fig. 1 to 5 can be inserted into corresponding plugs as shown in fig. 6 to 8, thus forming the layout as shown in fig. 9 to 11.

The counter-plug 20 has a contact plate 26 formed of metal, which has a central opening through which the base 21 protrudes, the base 21 being composed of an electrically insulating material and having an opening on its front side, into which a contact element 25 is inserted, the contact element 25 being electrically connectable with the contact element 1 of the plug. The base 21 has such a diameter and such an axial length that it can be inserted into the recess 14 of the plug.

The base 21 and the plurality of arc-shaped contact recesses 27, which extend around the base 21 on an arc, are surrounded by the wall 23, so that a cylindrical recess 22 is formed, into which the head of the base can be inserted, so that the

positioning projections

10, 11, 12, 13 can project into the positioning recesses 24 of the wall 23.

The contact plate 26 forms the bottom of the pocket 22. The shield contact tongues 3 fit into the contact notches 27. In this case, the vertex 7 is located on the side of the contact plate 26 pointing away from the recess 22, so that the side edge 8 comes into contact with the edge of the contact recess 27.

The fixing plate 28 extends parallel to the contact plate 26, and the base 21 is fixed to the fixing plate 28. The free ends of the shield contact tongues 3 are located in the gap between the fixing plate 28 and the contact plate 26 in the inserted state.

The above-described embodiments serve to explain the invention covered in its entirety by the present application, which improves the prior art at least by combining or also independently of the following features, namely:

a plug, characterized in that the shielding contact tongues 3 have radially outwardly directed contact springs 4 in the end sections located in front of the contact element 1 and the contact carrier 2 in the direction of the plug axis a.

A plug is characterized in that the contact springs 4 are freely cut out of a substantially rectangular end section, with the formation of respective annularly surrounding windows 9.

A plug is characterized in that the contact spring 4 is fastened to the shield contact tongue 3 at a bent edge 5, which extends transversely to the plug axis a and is assigned to a free end of the shield contact tongue 3.

A plug, characterized in that the contact spring 4 is formed with two

legs

6, 8 which are connected to one another on a vertex 7, wherein the vertex 7 extends on a common second circular arc which is located outside the first circular arc, wherein the shielding contact tongues 3 are curved in particular along the first circular arc.

A plug is characterized in that the contact element 1 projects from the bottom 18 of the recess 14 of the contact carrier 2 into the recess 14.

A plug, characterized in that positioning lugs 10, 11, 12, 13 extend between adjacent shield contact tongues 3.

A plug, characterized in that a rear handle 17 is provided which extends substantially in the direction of the plug axis a.

A plug, wherein a cable 16 extends from the plug at an acute angle to the plug axis a.

A connector device having a connector according to one of the preceding claims and a counter-connector 20, the counter-connector 20 having a base 21, the base 21 projecting into a second recess 22 formed by a wall 23 of the counter-connector 20 and being insertable into the recess 14 of the contact carrier 2, wherein the contact plates 26 surrounding the base 21 form contact recesses 27 into which the shielding contact tongues 3 project, so that the side 8 pointing away from the free ends of the shielding contact tongues 3 engages on the contact plates 26.

All features disclosed (by themselves and in combination with one another) are of inventive significance or inventive value. The disclosure of the associated/subordinate priority document (prior application) is also fully included in the disclosure of the present application, for which reason the features of this priority document are also included in the claims of the present application. The features of the dependent claims are all developments which have independent inventive significance or value for the prior art and can be filed separately on the basis of these dependent claims.

List of reference numerals

1 contact element

2 contact support

3 shield contact tongue

4 contact spring

5 folding edge

6 side edge

7 corner vertex line

8 side edge

9 window

10 positioning lug

11 positioning projection

12 positioning projection

13 positioning projection

14 sink

15 annular edge

16 cable

17 handle

18 bottom

20 corresponding plug

21 base

22 sink

23 wall

24 positioning recess

25 contact element

26 contact plate

27 contact gap

28 fixed plate

Axis of A plug

Claims

1. A plug having a contact carrier (2) and a shielding contact arrangement, the contact carrier (2) carrying a plurality of contact elements (1) which can be connected or connected in each case to the core of a cable and which extend in the direction of a plug axis (A), and the shielding contact arrangement being designed with a plurality of discrete shielding contact tongues (3) which extend on a first circular arc around the plug axis (A) and which extend in the direction of the plug axis (A) and which can be connected to a cable shielding and which are formed from strips, wherein the shielding contact tongues (3) have radially outwardly directed contact springs (4) in an end section which is located in front of the contact elements (1) and the contact carrier (2) in the direction of the plug axis (A), wherein the contact springs (4) are cut free from the shielding contact tongues (3) with the formation of a respective annularly surrounding window (9), the contact spring (4) is fastened to the shielding contact tongue (3) at a bending edge (5) associated with the free end of the shielding contact tongue (3), and the contact spring (4) is designed with two flanks (6, 8) which are connected to one another on a vertex angle line (7), wherein the vertex angle line (7) extends on a common second circular arc line which surrounds the plug axis (A) and is located radially outside the first circular arc line.

2. A plug as claimed in claim 1, characterized in that the shield contact tongues (3) are curved along the first circular arc.

3. Plug according to claim 1, characterized in that the contact element (1) projects from the bottom (18) of the recess (14) of the contact carrier (2) into the recess (14).

4. A plug as claimed in claim 1, characterized in that the positioning lug (10, 11, 12, 13) extends between adjacent shield contact tongues (3).

5. Plug according to claim 1, characterised in that a rear grip (17) is provided which extends substantially in the direction of the plug axis (a).

6. A plug as claimed in claim 1, characterised in that the cable (16) extends from the plug at an acute angle to the plug axis (a).

7. Plug arrangement having a plug according to one of the preceding claims and a counter-plug (20), the counter-plug (20) having a base (21), the base (21) projecting into a second recess (22) formed by a wall (23) of the counter-plug (20) and being insertable into a recess (14) of a contact holder (2), wherein a contact plate (26) surrounding the base (21) forms a contact recess (27) into which the shielding contact tongue (3) projects, such that a side edge (8) pointing away from a free end of the shielding contact tongue (3) engages on the contact plate (26).