WO2004097995A1

WO2004097995A1 - Electric plug-in coupling

Info

Publication number: WO2004097995A1
Application number: PCT/EP2004/004615
Authority: WO
Inventors: Rüdiger HIRDES
Original assignee: Hirdes Ruediger
Priority date: 2003-05-02
Filing date: 2004-04-30
Publication date: 2004-11-11
Also published as: DE10320594B3

Abstract

The invention relates to an electric plug-in coupling (1) consisting of an at least bipolar plug (2) associated with a first electric line (8) and a counter-part (3) which is detachably connected thereto in the form of an at least bipolar socket or a coupling part of a second electric line (25), whose contact elements (23) engage with the contact elements (6) of the plug (2) after insertion in order to establish an electrically conductive connection of the two electric lines (8,25). The plug (2) consists of a male part (2), which is respectively provided with a groove (5) extending in a straight line and horizontal manner in relation to the longitudinal axis of symmetry (4) on at least two diametrically opposite external areas of containment, whereby a contact element (6) is fixed in each groove (5), and the counter-part is formed by a female part (3) with two leaf spring locking pins (21) with contact elements (23) facing away from the direction of insertion (arrow 22) arranged in the interior (20) thereof.

Description

Patent Attorney Dipl.-Ing. Lambert Eichelbaum

D-45659 Reckling outside crippled oaks 6

Telephone: (02361) 21091-2 • Fax: (02361) 22949 • Email: pa@eichpatent.de

04/27/2004 Hi 2889-PCT

applicant:

Dr. med. dent. Rüdiger Hirdes Kleinherbeder Str. 9a, D - 58455 Witten

"Electrical plug coupling"

Description :

The invention relates to an electrical plug-in coupling, consisting of an at least two-pole plug of a first electrical line and a detachably connectable

Counterpart in the form of an at least two-pin socket or a coupling piece of a second electrical line, the contact elements of which come into contact with the contact elements of the plug after being inserted into one another for the electrically conductive connection of the two electrical lines.

In the previous electrical plug-in couplings known from public use, the counterpart has two sockets into which the pins protruding from the end face of the plug are inserted or pressed in, the sockets of the counterpart on the one hand and the metallic pins of the plug on the other hand directly forming the contact elements , These plug-in couplings have the disadvantage that if the plug is not fully inserted into the counterpart, the electrically conductive contact between the contact elements does not always take place. This is not always recognizable from the outside. Furthermore, to secure the sockets in the counterpart to avoid accidents in children, a separate child safety device must be arranged in order to prevent metal objects from being inserted into one of the two sockets.

Starting from this prior art, the object of the invention is to provide an electrical plug-in coupling of this type create, which on the one hand guarantees an externally recognizable electrical contact in the plug and counterpart and on the other hand contains an integrated child lock.

This task is in connection with the above

Generic term according to the invention solved in that the plug consists of a male part provided on at least two diametrically opposed outer peripheral regions, each with a straight and perpendicular to the longitudinal axis of symmetry groove, with a contact element fixed in each groove, and that

Counterpart is formed by a female part, in the interior of which two leaf spring-like, parallel to each other and also perpendicular to the longitudinal axis of symmetry and diametrically arranged locking pins are arranged with contact elements facing away from the insertion direction, which are firmly anchored in the female part and resiliently when the male part is inserted into its grooves engage and thereby contact the contact elements fixed therein with their contact elements in an electrically conductive manner.

This training is the first to be complete

Moving away from the previous state of the art, an electrical plug-in coupling according to a “push-button principle” was created, which, because of the leaf-spring-shaped locking pins between the contact elements, only permits an electrically conductive connection when this locking connection engages

Operator recognizable from the outside in that otherwise the connector is loose and can be pulled out immediately. Due to the contact elements facing away from the direction of insertion in the locking pins of the die part, straight lines can be inserted during insertion Objects, such as screwdrivers, needles or the like, do not come into contact with the contact elements of the male part. To do this, a specially curved hook would have to be inserted. In this respect, this exhaustion also includes direct child protection. To check whether one of these two contact elements is de-energized, a specialist can check the contact at any time with a correspondingly hook-shaped object of a test device.

Accordingly, the grooves in the male part are advantageously undercut, the contact elements of which are located in this undercut area. This also ensures protection against torsion.

To facilitate the plug-in connection when coupling, the front free end of the male part is cone-shaped.

To reduce the ohmic resistance between the contact surfaces of the contact elements, the locking pins of the die element engage with a partial surface under such spring preload in the grooves of the male element that the contact elements of the matrix element and the male element lie against one another under preload.

To increase this pretension, a further contact element in the form of a is advantageously on the end face of the male part

Sphere, hemisphere or the like. Arranged in a recess, which is under the action of a spring and, using the bottom of the die box as a counter-pressure bearing, presses the male box upwards after reaching under the locking pins. As a result, the contact pressure between these contact elements of the female part and male part is increased. The further contact element of the male part can advantageously be used in conjunction with the correspondingly vented counter pressure bearing in the female part.

The uncoupling of the electrical plug-in coupling is particularly advantageous. It is accomplished by the fact that the locking pins of the matrix menu that engage in the grooves of the male menu can be elastically bent into a recess of the matrix menu when the matrix and male menu are rotated relative to one another and then the male menu can be removed. Since the front free end of the male part is cone-shaped, an automatic pushing out of the male part follows from a small angle of rotation under the increased spring preload of the locking pins, with the result that the male part is jerked out.

In order to be able to connect a plurality of electricity consumers arranged in an electrically parallel manner to one another with one and the same electrical plug-in coupling in the low-voltage range, according to a particularly advantageous further development of the invention, locking pins are arranged in the matrix menu at intervals one above the other, each with a contact element, with which several in a swirled-out male element , interact at the appropriate height one above the other arranged contact elements. The locking pins are provided with electrically conductive contact elements only on their outer surface areas facing the recess. This can be advantageous vortex-like, patrician tubes consist of individual patrician tubes which can be plugged together by means of a clip connection, so that an arbitrarily extendable patrician tube composed of individual module parts is created.

After a first - but not exclusive - further bend, the clip connection is made up of three leaf springs offset by 120 ° to each other with locking lugs, which snap into a central blind hole with an undercut bottom edge on the front side of each individual patrix and engage behind the undercut bottom edge with locking lugs. Contact elements are embedded both on the end face and on the opposite side of each individual patrix, of which the respective potential-equal contacts are electrically conductively connected to one another and to the relevant contact element in the grooves. Since this is an application in the low voltage range of e.g. 6 V to 24 V is a child lock and a NuUeiter unnecessary.

The male and female parts are advantageously manufactured as injection molded parts, with which the electrical lines of the respective cables are electrically coupled in a conventional manner by means of screw-crimp connections.

To as with the previously known electrical

To ensure that plug-in couplings are securely plugged into the respective contact elements, the patrix menu is provided with signals or colored dots on two diametrically opposite outer areas, with two on the top of the Interact with the matrix of diametrically arranged signals.

Several embodiments of the invention are shown in the drawings. Show:

1 is a view of the patrician tea,

2 shows the view of the patrice tea in the direction of the Pfeües II of FIG. 1,

3 shows the bottom view of the male part of Fig. 1 in the direction of Pfeües III,

FIG. 4 shows a diametrical sectional view of the die tea in the direction of the plee IV of FIG. 5, FIG.

5 shows the top view of the die menu in the direction of the pee V of FIG. 4,

6 shows the diametrical sectional view in the direction of the Pfeües VI of Fig. 7,

7 is a top view of the die menu in the direction of the nozzle VII of FIG. 6,

8 is a diametrical sectional view along the Pfeüe VHI / VIII through the male part and the male part of FIG. 9 before the engagement of the respective contact elements, 9 is a plan view in the direction of the Pfeües IX of Fig. 8,

10 shows the diametrical sectional view along the Pfeüe X / X through the male part and the male part of FIG. 11 after engagement of the respective contact elements,

11 is a plan view in the direction of the Pfeües XI of Fig. 10,

12 is a schematic plan view of the locking pins of the die box and the grooves of the male box after contact,

13 shows the schematic representation of FIG. 12 after a relative rotation of the matrix and male parts and the resultant bending of the tea areas of the locking pins into the respective recesses in the female part with the result of the uncoupling,

13a is a diametrical sectional view through the die menu with uncoupled male menu,

13b the view in the direction of the Pfeües Xlllb of Fig. 13a,

14 shows the view in partial section of a male part composed of several individual male parts in a vortex-like manner,

15 is the view of a single patricia menu, 16 shows the sectional view through a single patrix corresponding to the plows XVI / XVI from FIG. 15,

17 is a top view of the individual patrician menu in the direction of the pipe XVII of FIG. 15.

18 shows the diametrical sectional view along the plows XVIII / XVIII of FIG. 19 through a die set with a plurality of locking pins arranged one above the other with corresponding contact elements,

19 is a plan view in the direction of the Pfeües XIX of Fig. 18,

Fig. 20 is the view of the male part of Fig. 14 and

21 shows the cross-sectional view through the matrix and male part after plugging into one another and the electrical coupling of the contact elements caused thereby.

8 and 10, the electrical continues

Plug-in coupling 1 composed of a male part 2 and a female part 3, the contact elements of which, to be described in greater detail, interact with one another in a special way.

1 to 3, the male part 2 consists of a substantially pear-shaped body which is provided in its outer circumferential area on two diametrically opposite areas, each with a straight and perpendicular to the longitudinal axis of symmetry 4 groove 5 and in each has a contact element 6 in an undercut area. The front free end 7 of the male part 2 is cone-shaped. The first electrical line 8 is connected in the interior of the male part 2 by means of a known screw-crimp connection 9 to the lines 10 to the contact elements 6, as shown in FIGS

Cross-sectional representations of FIGS. 8 and 10 can be seen clearly.

As can be seen from the same figures, is on the

End face 11 of the male part 2, a further contact element in the form of a ball or hemisphere 12 or the like, which is arranged in a recess 13 and is under the action of a spring 14. In connection with the counter-pressure bearing 16 arranged in the bottom 15 of the die 3, this contact connection 12, 14, 16 forms the nut 17.

As can also be seen from FIGS. 8 and 10, the male part 2 has two parts, namely 2a and 2b, of which the upper part 2b includes a housing-like hood which is used for

Introduction of the first electrical line 8 is provided with a seal 18. The second part 2a forms the plug-in part. The parts 2a, 2b of this plug are coupled to one another by means of a crimp, screw, clip or clamp connection, which is sufficiently known from the prior art and is not the subject of the present invention.

4 to 7, the die menu 3 is shown in all its details. This essentially consists of one can-shaped housing 19, in the interior 20 of which two leaf spring-like, parallel to each other and also perpendicular to the longitudinal axis of symmetry 4 and diametrically arranged locking pins 21 are arranged with contact elements 23 facing away from the insertion direction 22 of the male part 2, which are firmly anchored in the female part 3 and when inserted of the male part 2 snap resiliently into its grooves 5 and thereby contact the electrical contact elements 6 fixed in the male part 2 with their contact elements 23 in an electrically conductive manner.

As can be seen clearly from FIGS. 5 and 7, the contact elements 23 are electrically conductively connected to a second electrical line 25 via lines 24.

As can be seen from FIG. 8 in connection with FIG. 4, this becomes

Patrizenteü 2 with its conically flared front end 7 pushed into the space 27 formed by the two locking pins 21, whereby the locking pins 21 with their central tea areas are bent up and bent into the recesses 26 in the female part 3 until the conical end 7 with the grooves 5 the locking pins 21 according to FIG. 8 has under grips and then these locking pins 21 spring back into the position shown in FIG. 8. The hemisphere 12 is pressed against the action of the spring 14 into the recess 13, and after releasing the male part 2, this is pressed upwards under the force of the spring 14 in the direction of the locking pins 21. As a result, the contact elements 6 come into contact with the contact elements 23 in the grooves 5 under both the pretension of the spring 14 and the latching bag 21 which is slightly prestressed in this position the locking pins 21, which creates a secure electrical connection with low ohmic resistance. This position is shown in Fig. 10. Parts corresponding to FIGS. 1 to 7 are designated by the same reference numbers.

The bending or bending of the locking pins 21 in the direction of the recesses 26 is shown schematically in FIGS. 12 and 13. 12 shows the contact position of the male part 2 and the female part 3, the locking pins 21 engaging in the grooves 5 of the male part 2. If the male part 2 is now rotated relative to the male part 3 in the direction of the plug 28, 29 in this plug-in contact position in FIG. 12, the locking pins 21 in the male part 3 are enlarged by the cross-sectional area of the conical front end 7 of the male part 2 that increases between the grooves 5 Widened in the direction of the recesses 26 in the die box 3 until the area of the grooves 5 comes out of the area of action of the locking pins 21, which is already after a slight rotation of the FaU. In this instant, the locking pins 21 spring back in the direction of the plug 30 (see FIG. 13) and thereby press the male part 2 out of the female part 3.

As clearly shown in FIGS. 8 to 10 in connection with FIG. 4, the contact elements 23 are located in the locking pins 21 on the surface area facing away from the insertion direction of the nozzle 22 of the male part 2. As a result, a child with a pointed object, for example, cannot reach these contact elements 23. This would require a hook-shaped object. The embodiments described for FIGS. 1 to 13 are suitable for the usual voltage range in the house between 220 V and 250 V and therefore have the above-described child safety device.

The present electrical plug-in coupling can, however, also be used for the low-voltage range, as a result of which childproof locks and safety devices are unnecessary.

In the low-voltage range, however, it is often desired to connect as many contact elements of numerous lines as possible with the corresponding, potential-equal, corrective contact elements of other supplied lines in the form of a lever tree. For this purpose, locking pins 21, each with a contact element 23, are arranged one above the other at intervals in the matrix menu 3, with which a plurality of contact elements 6, arranged one above the other, cooperate in a swirl-like, patrixed configuration 2 according to FIGS. 14 and 20, as is the case is shown in Fig. 21.

14 to 17 consists of individual patricules 2a to 2d which can be plugged together by means of a clip connection 31. 15 to 17 of three leaf springs 32 offset by 120 ° to each other with latching lugs 33, which snap into a central blind hole 34 with an undercut bottom edge 35 in the end face 36 of each individual male part 2a to 2d and snap together the Latches 33 engage behind the bottom edge 35. 15, contact elements 38 are inserted both on the front side 36 and on the opposite side 37 of each individual patrix 2a to 2d, of which the respective potentials are equal to one another and to the relevant one

Contact element 6 in the grooves 5 are electrically connected. In order to be able to position this contact exactly, each pin 39 provided with the leaf springs 32 is provided with a guide lug 40, which corrects each with a guide groove 41 in the blind hole 34.

In order to allow a quick, mutually aligned insertion of male part 2 and female part 3, the male part 2 is provided with signals, e.g. in the form of arrows or colored dots, which correct with two diametrically arranged signals on the top 3a of the matrix 3. Guides as in conventional plug connections according to the prior art cannot be used, because the male part 2 must be relatively rotatable to the female part 3 in order to be released.

The male part 2 and the male part 3 are advantageously made of injection molded parts with which the electrical lines 10, 17 of the respective cables 8, 25 are electrically coupled in a conventional manner by means of screw-crimp connections 9. LIST OF REFERENCE NUMBERS

Electrical plug coupling 1

Patrizenteü 2

Individual patricia 2a, 2b, 2c, 2d

Matrix 3

Top of the die menu 3 3a

Longitudinal axis of symmetry of the male part 2 4

Slot 5

Contact elements 6, 23, 38

conical end of the male part 2 7

electrical lines 8, 10, 17, 24, 25

Screw-crimp connection 9

End face of the patrix 2 11

Sphere / Hemisphere 12

Return in the Patrizenteü 2 13

Spring 14

Bottom of the die box 3 15 Back pressure bearing in die menu 3 16

Next 17

Seal 18

can-shaped housing 19

Interior of housing 19 20

Locking pins 21

Direction of insertion of the male part 2 22

Setbacks in the die menu 3 26

Space between the locking pins 21 27

Directional pipe 28, 29, 30

Coupling 31

Leaf springs 32

Lugs 33

Blind hole 34

Bottom edge 35

Front of

Individual patricia 2a to 2d 36 the opposite side

Side of the individual patents menu 2a to 2d 37

Pin 39

Guide nose 40

Guide groove 41

Claims

claims

1.Electric plug-in coupling, consisting of an at least two-pole plug of a first electrical line and a releasably connectable counterpart in the form of an at least two-pole socket or a coupling piece of a second electrical line, the contact elements of which with the contact elements of the plug after plugging into one another for the electrically conductive connection of the two electrical lines come into contact with one another, characterized in that the plug (2) is provided with a groove (5) running on at least two diametrically opposed outer peripheral regions, each with a straight line and perpendicular to the longitudinal axis of symmetry (4)

There is a male part (2) with a contact element (6) fixed in each groove (5) and the counterpart is formed by a female part (3), in the interior (20) of which two leaf spring-like parts, each other and also perpendicular to the longitudinal axis of symmetry (4) and also diametrically arranged locking pins (21) with contact elements (23) facing away from the insertion direction (Pfeü 22), which are firmly anchored in the die menu (3) and spring into the grooves (5) when the male part (2) is inserted and contact the contact elements (6) fixed therein with their contact elements (23) in an electrically conductive manner.

2. Electrical plug coupling according to claim 1, characterized in that the grooves (5) in the male part (2) are undercut and their contact elements (6) are in the undercut area.

3. Electrical plug-in coupling according to claim 1 or 2, characterized in that the front free end (7) of the male part (2) is grooved like a keg.

4. Electrical plug-in coupling according to one of claims 1 to 3, characterized in that the locking pins (21) of the die part (3) engage with a partial surface under such a spring preload in the grooves (5) of the male part (2) that the contact elements ( 23, 6) of the matrix menu (3) and the male menu (2).

5. Electrical plug-in coupling according to one of claims 1 to 4, characterized in that in the end face (11) of the male part (2) a further contact element in the form of a ball, hemisphere (12) or the like is arranged in a recess (13) , which is under the action of a spring (14) and, using the bottom (16) of the die box (3) as a counter-pressure bearing, presses the male box (2) upwards after reaching under the locking pins (21).

6. Electrical plug-in coupling according to claim 5, characterized in that the further contact element (12, 14) of the male part (2) in conjunction with the correspondingly vented counter-pressure bearing (16) in the female part (3) embeds the NuUeiter {17).

7. Electrical plug-in coupling according to one of claims 1 to 6, characterized in that in the grooves (5) of the male part (2) inserting locking pins (21) of the female part (3) at a relative rotation (Pfeüe 28, 29) of female parts and male part (3, 2) in a tea area can be elastically bent into a recess (26) of the male part (3) and then the male part (2) can be removed.

8. An electrical plug-in coupling according to one of claims 1 to 7, characterized in that locking pins (21), each with a contact element (23), are arranged in the matrix menu (3) at intervals one above the other, with which contact pins (23) are swirled in a swirl-like manner ) several contact elements (6) arranged one above the other at an appropriate height interact.

9. Electrical plug-in coupling according to claim 8, characterized in that the swirl-like, patriciate tube (2) consists of individual male tubes (2a to 2d) which can be plugged together by means of a plug connection (31).

10. Electrical plug-in coupling according to claim 8 or 9, characterized in that the Küpsverbindung (31) consist of three by 120 ° offset from each other leaf springs (32) with locking lugs (33) which in a central blind hole (34) with an undercut bottom edge ( 35) on the

Snap the end face (36) of each individual patrix (2a to 2d) into place and engage the bottom edge (35) with locking lugs (33).

11. Electrical plug-in coupling according to one of claims 8 to 10, characterized in that both on the end face (36) and on the opposite side (37) of each individual patrix (2a to 2d) contact elements (38) are embedded, of which the each potential-equal with each other and with the relevant contact elements (6) in the grooves (5) are electrically conductively connected.

12. Electrical plug-in coupling according to one of claims 1 to 11, characterized in that the male part (2) and the male part (3) are made of injection molded parts with which the electrical lines (20, 17) of the respective cable (8, 25) are electrically coupled in a conventional manner by means of screw-crimp connections (9).

13. Electrical plug-in coupling according to one of claims 1 to 12, characterized in that the

Male part (2) on two diametrically opposite outer areas with signals, e.g. Pfeüen or colored dots is provided, which correct with two diametrically arranged signals on the top (3a) of the die menu (3).