WO2006105987A1

WO2006105987A1 - Plug-in connection with protection against electric shock, in particular solar plug-in connection

Info

Publication number: WO2006105987A1
Application number: PCT/EP2006/003210
Authority: WO
Inventors: Michael Grimm
Original assignee: Amphenol-Tuchel Electronics Gmbh
Priority date: 2005-04-08
Filing date: 2006-04-07
Publication date: 2006-10-12
Also published as: EP1867010A1; EP1867010B1; DE102005016266A1; DE102005016266B4

Abstract

Plug-in connector which has a plug-side plug-in connector (10) and a socket-side plug-in connector and allows for the socket-side plug-in connector and the plug-side plug-in connector (10) to be plugged together or disassembled, to be precise in order to produce or isolate an electrical contact. In this case, the plug-side plug-in connector (10) has a plug body (11) and a plug element (22) arranged in said plug body (11) and having a connection part and a contact pin (40), the plug body having at least one elongate contact chamber (12) with an opening (99); the elongate contact chamber having an inner wall face (90) extending in the longitudinal direction, a base face arranged transversely with respect thereto in the interior of the plug body and, opposite this base face, a plug-in side with the opening (99) such that the contact chamber is accessible from outside the plug body through the opening; in the contact chamber (12) the contact pin (40) of the plug-in element being arranged parallel to the wall face from the base face in the direction of the opening (99); and finger entry blocking means (60) which protrude into the contact chamber being arranged on the wall face on the plug-in side such that a finger entering the opening is prevented from coming into contact with the contact pin.

Description

Touch-proof plug-in connection, in particular solar plug-in connection

The invention relates to a connector with plug-side connector (short: plug) and socket-side connectors (short: female) with fingericherem socket and pin contact. The connector is particularly suitable for use in Soiarsystemen.

The plug has a. Contact chamber with a contact pin in it. The contact chamber is usually relatively long, so that a VDE test finger does not come into contact with the contact pin. :

The relatively long contact chamber is due. the special constellation of the involved dimensions necessary. If the contact pins with the length Ls reach to the front end of the plug, they can be touched very easily, if due to the dimension of the socket with a length Lb and the diameter Db, the opening diameter Ds is then large enough, so that the VDE test finger can come in contact with the tip of the contact pin. If the contact pin should also have the length Ls of the socket length Lb, this contact with the VDE test finger can only be prevented if the enclosing plug body or contact body is designed longer, namely greater than Ls + penetration depth of the test finger. Alternatively, although the contact pin could also be chosen shorter, so that it lies with its reachable end deep enough in the contact body; but then the effective contact bearing surface (formed depending on the length Ls with which the contact fingers in the socket is) again lower, which is to be avoided. Due to the extension of the contact body to at least Ls + penetration depth of the test finger but the plug is quite long and thus the connector.

US 5,425,650 A describes a structure with which a tilted or tilted insertion of a plug is prevented in a socket. This is a socket housing with at least one guidance projection, which is inside extends, formed and provided with a Vieizahi of plug connections. Further, a connector housing is formed with at least one guide groove on the outer surface to engage the guide projection and provided with a plurality of female terminals. Specifically, the guide projection is formed at an inner end with a tilt preventing projection, and the guide groove is formed with a sliding guide groove at an inner end such that the tilt preventing projection engages with the slide guide groove and is slidable in the slide guide groove.

The object of the present invention has been made to provide preferably with the use of RADSOK high current contacts a connector and a plug with minimized length, such that a finger, for example, a VDE test finger does not come into contact with the contact pin.

According to the invention, this is done by the in the claims 1, 13 υnd 19. particular specified measures. Preferred embodiments erge-, ben from the dependent claims.

Further advantages, objects and details of the invention are described below with reference to the drawing.

In the drawing shows:

1 shows a schematic section through a plug both with a known contact chamber and a contact chamber according to the invention; Fig. 2 is a schematic perspective view of a plug according to the invention;

Fig. 3 is a schematic perspective view of a socket according to the invention; and FIG. 4 shows a schematic section through a plug connector with socket and plug. FIG. 1 shows a schematic section of a plug-side connector 10. The connector-side connector 10 will be referred to as connector 10 for short. In the plug body 11 is in the lower Schnitthäifte a bushing receiving chamber 3 or contact chamber 3 according to the invention for the left in Fig. 2 part of the plug 10 and in the upper half of a bushing receiving chamber 12 and the contact chamber 12 of the invention right connector part shown in Fig. 2.

FIGS. 2 and 4 show in the left part the contact chambers 12 according to the invention and the contact chambers 3 in the right part. As can be seen in particular from FIG. 4, the contact chambers are still respectable with respect to each other. descriptive webs 60 "twisted".

The elongate contact chamber 12 has, in the longitudinal direction, an inner wall surface 90 surrounding the contact chamber 12, and a bottom surface 91 arranged inside the plug body 11 and the bottom surface 91 opposite a plug side 92 with an opening 99. The contact chamber 12 is accessible through the opening 99 from outside the plug body 10. The contact chamber 12 has a circular cylindrical basic shape.

At the contact chamber 12 is followed in the interior of the plug body 10, a contact pin feedthrough 13. Adjacent to the contact pin feedthrough 13, a fixing portion 14 is arranged. At the attachment portion 14, a terminal receiving chamber 15 connects. In this case, the contact pin feedthrough 13 has a smaller diameter than the contact chamber 12 and a smaller diameter than the attachment portion 14. The terminal receiving chamber 15 has a larger diameter than the fixing portion 14. The bush receiving chamber 12, the contact pin feedthrough 13, the attachment section 14 and the connection chamber 15 receive a plug-in element 22. The plug element 22 has a connection part 41, preferably with a conductor receiving space, fastening supply center! 42 and a contact pin 40, the conductor receiving space is used to connect an electrical conductor. The contact pin 40 has the fastening means 42 located opposite an end face 48. The plug-in element 22 is fastened to the fastening means 42 in the attachment section 14 of the plug body 11. The Anschiusstei! 41 is located in the terminal receiving chamber 15. The contact pin 40 extends through the contact pin feedthrough 13 into the contact chamber 12.

The contact chamber 3 has an opening 98 and is analogous to the _. constructed contact chamber 12 described above.

The contact pin 40 has in the contact chamber 12, the length Ls corresponding to the distance from the bottom surface 91 of the contact chamber 12 to the end face 48 of the contact pin 40th

The contact chamber 12 has the length Lk corresponding to the distance of the bottom surface 91 of the contact chamber 12 to the opening 99th

The front end surface 48 of the contact pin 40 points in the direction of the opening 99 of the contact chamber 12. The contact chambers in which the contact pin 40 is fixed are usually relatively long so that a VDE test finger 5 does not come into contact with the end face 48 of the contact pin 40. If the contact chamber is not carried out long enough, then the VDE test finger 5 comes into contact with the end face of the contact pin 40. In this case, the VDE test finger 5 then occurs relatively far through the opening into the contact chamber.

The substantially circular opening 98 has a diameter Ds, the diameter Ds corresponding to the diameter of a circular disk which would fit through the opening 98 if the webs 60 described below were not present. Similarly, the opening 99 has a diameter Dr ₁ which is determined by the opening restricting webs 60. In order to prevent the penetration of the VDE test finger 5, the cross section, ie, the diameter Dr of the opening 99 is reduced by finger entry blocking means 60 such that the test finger can no longer or only very slightly dive into the opening 99. As a result, the plug overall can be made shorter or, with the same construction length, penetration of the VDE test finger 5 can be prevented.

The contact chamber 12 has as finger entry blocking means 60 preferably four parallel to the contact pin 40 extending rib-like webs 60. The webs 60 extend from the opening 99 forth on the interior of the wall surface 90 of the contact chamber 12 into the interior of the plug body 2. In the contact chamber 3, the webs 60 with respect to the contact chamber 12 "twisted" ..

In Fig. 2, the plug-side connector 10 and the plug 10 is shown with the plug body 11 having two contact chambers 12 according to the invention. In this case, the webs 60 project from the wall of the contact chamber 12 into the center in the direction of the contact pin 40. The webs 60 are preferably distributed uniformly over the circumference of the opening 99 of the contact chamber 12. Thereby, the opening 99, i. the effective diameter Dr of the opening 99 is most effectively reduced.

As can be seen in the upper part of FIG. 1, the test finger 5 can not be introduced through the reduced effective opening 99 to the end face 48 of the contact pin 40 in the contact chamber 12. Reduced effective aperture 99 here means that the diameter Dr of an approximately circular disk passing through the aperture 99 narrowed by webs 60 is smaller than the diameter Ds of an approximately circular disk which would fit through the unrestricted aperture. The original, unrestricted diameter Ds can be seen at the opening 98, since there the webs 60 are not cut in the Dastellung of Fig. 1. In a roughly circular shape corresponds to the cutting surfaces through the VDE test finger parallel to and at the level of the opening when the finger is in the opening. As a result, a short protection of the plug 10 or of the plug-in connector 10 on the plug-in side makes it possible to provide contact protection.

A reduction of the effective diameter Dr of the opening 99 is possible if at least one web 60 is used. More than one web 60, in particular four webs 60 allow a further reduction of the effective opening of the contact chamber.

The finger entry means 60 are designed as at least one projection 60, which is preferably located only in the region of the opening 99. It is not necessary that the projection 60 extends over the entire length of the contact chamber 12. Several projections can be arranged over the circumference of the opening 99, preferably at the same circumferential distance from each other.

The plug 10 is preferably designed as a round plug. The plug body 11 has an oval cross-section.

FIG. 3 shows the socket 50 or the socket-side plug connector 50. The socket 50 has a socket body 51. The socket body

In FIG. 3, 51 has two socket receptacles 53 which each receive a RAD-SOK socket 52 and preferably insulate against contact. The bush receptacle 53 has web receptacles 61 on the outer circumference.

The socket body 51 has an oval cross-section. The socket body 51 forms a plug receiving space 55, in which the two socket receptacles 53 are arranged and which receives a part of the plug body 11 in the inserted state. The socket body 51 has an inwardly directed chamfer at the plug-side end, which facilitates the insertion of the plug into the socket. Preferably still sealing lips are provided to prevent the ingress of dust or water in the connector 100 described later. The bush receptacle 53 for receiving the cylindrical RADSOCK socket 52 has a kreiszylinderförrnige basic shape. The diameter Db on the female receptacle 53 is determined by the diameter of the RADSOCK socket and twice the material thickness of the female receptacle 53. The material strength of the female receptacle 53 is determined by the necessary mechanical stability. If one considers these requirements for the mechanical stability, it is clear that the diameter Db of the bush receptacle 53 can not become arbitrarily small and thus defines the diameter Ds of the contact chamber. On the outer circumference of the bush receptacle 53 finger entry blocking means receiving means 61 are arranged. Preferably, the finger entry blocking means receiving means 61 are formed as web receiving grooves 61, which extend over the length of the bush receptacle 53 and serve to receive the webs 60. By the. Web receiving grooves 61, the material thickness of the bushing receptacle 53 in the area of web receiving grooves 61 is reduced. The maximum allowable reduction of the material thickness of the bushing receptacle 53 determines the maximum height of the webs 60. In the case of projections 60, the finger entry blocking means receiving means 61 for receiving the finger entry blocking means 60 can also be designed as projection receptacles 61, which form a receptacle only in the front or plug-side area of the socket receptacle 53.

FIG. 4 shows a schematic section through a plug connection 100 with a plug according to FIG. 2 and a socket according to FIG. 3 in the assembled state. The socket receptacle 53 is located in the contact chamber 12 of the plug 10 and the contact pin 40 of the plug 10 is located in the RADSOK socket 52 or contact socket 52 of the socket 50. The line ll indicates the position of the section of the illustrated in Figure 1 Plug 10.

In the figures 2 to 4 coding still 66 and Kodieraufnahmen 67 are additionally shown. The Kodiemasen 66 and the Kodieraufnahmen 67 are formed in a similar manner as the webs 60 and the web receivers 61. An encoding of the connector 100 is also possible via a Uneven arrangement of the webs 60 and web recordings 61 over the circumference Kontakter contact chamber 12 possible.

The Codiemasen 66 are attached to the female receptacle 53. As a result, there is no reduction in the material thickness of the socket receptacle 53. The coding receptacle 67 or codiemase receptacles 67 are formed in the plug body 11. The contact chamber 12 is extended in the region of the Codiernasenaufnahmen 67 to the outside.

An embodiment with more than one contact pin 40 per contact chamber 12 is also possible. The contact pin 40 may also have, for example, a square cross section or be formed as a sheet contact. According to the shape of the Kόntaktstifts 40 a adapted female contact 52 is used.

The finger entry blocking means 60 are provided on the inner wall surface 90 on the insertion side 92.

It is advantageous to provide a plurality of projections 60 as finger entry blocking means 60.

In Figures 2 to 4, the connector 100 is shown as a two-pin connector. However, single-pole or multi-pole plug connections can also be produced with one or more contact chambers 12 according to the invention.

The special bulge through the webs 60 in the contact chamber 12 for the contact pin 40 prevents the deep penetration of the test finger 5. An adapted contour in the socket body 51 and the socket receptacle 53 for the contact socket 52 also allows taking into account the required material strengthen a secure plugging of the connector. The inventive design of the contact chamber 12 is particularly suitable for the realization of a touch-safe contact pin 40 with a Diameter of the contact pin 40 of in particular 3 to 4 mm. At the same time a minimum length of the plug-side connector and thus the entire connector is achieved.

The plug body 11 and the socket body 51 are formed of electrically insulating material. Preferably, the plug body 11 is formed integrally with the finger entry blocking means 60. Insertion, sticking, welding or other suitable attachment of the finger entry blocking means 60 to the plug body 11 is also possible.

The inventively reduced diameter Dr of the opening 99 is also achieved by at least one projection 60 at the opening 99. Preferably, the finger entry blocking means 60 are formed as an elongate web.

In particular, the embodiment according to the invention is suitable for combination with a RADSOK socket 52.

BezuqszeJcbenliste

3 socket receiving chamber or Kontaktkamrner

5 VDE test fingers 10 Plug or plug-side connector,,

11 plug body

12. Socket receiving chamber or contact chamber

13 contact pin feedthrough

14 attachment section. 15 terminal ^{receiving chamber •}

22: plug element

40 contact pin •.

41 .Anschluss part preferably with ladder receiving space

42 fasteners

48 face

50 female or female connector

51.book body

52 RADSOK socket

53 socket receptacle

55 connector receiving space

60 finger entry blocking means; Head Start; web

61 finger entry blocking agent receiving means; Recess for web or web recording

66 coding nose

67 Coding nose recording

90 wall surface or wall

91 floor area

92 plug-in page

98 opening

99 opening 100 plug connection

Claims

1. Plug-side connector (10) or plug (10) with a plug body (11) and arranged in this one Anschiussteil. (41) and a contact pin (40) exhibiting plug element (22), wherein the plug body (11) has at least one elongated contact chamber (12) having an opening (99); wherein the elongate contact chamber (12) has a longitudinally extending inner wall surface (90), a bottom surface (91) disposed transversely thereto in the interior of the plug body (11) and opposite thereto a plug side (92) with the opening (99), such that the contact chamber (12) is accessible through the opening (99) from outside the plug body (11); wherein in the contact chamber (12) the contact pin (40) of the plug element (22) from the bottom surface (91) forth in the direction of the opening (99) is arranged parallel to the wall surface (90); and wherein on the wall surface (90) on the plug side (92) into the contact chamber (12) projecting finger entry blocking means (60) are arranged such that a in the opening (99) entering finger (5) is prevented from the contact pin (40 ) to touch.

Second connector-side connector (10) according to claim 1, wherein the basic shape of the elongated contact chamber (12) is preferably circular cylindrical.

3. plug-side connector (10) according to one or more of the preceding claims, wherein the finger entry blocking means (60) at least one, preferably a plurality of the plug body (11) formed projections (60).

4. Plug-side connector (10) according to one or more of the preceding claims, wherein the finger entry blocking means (60) have at least one, preferably a plurality of not formed by the plug body (11) projections (60).

5. plug-side connector (10) according to one or more of the preceding claims, wherein the Fängereintrittsbiockiermitte! (60) are arranged at the same circumferential distance from each other on the wall surface (90).

6. Plug-side connector (10) according to one or more of the preceding claims, wherein each projection (60) as a web on the

• Inner wall surface (90) of Koiitaktkammer (12) from the opening (99) extends to the bottom surface (91).

7. plug-side connector (10) according to one or more of the preceding claims, wherein the plug body (11) of electrically

, insulative material.

8. connector-side connector (10) according to one or more of the preceding claims, wherein the plug body (11) in the bottom surface (91) a contact bushing (13) and then a

Fastening portion (14) and a connection chamber (15) for receiving and holding the plug element (22).

9. plug-side connector (10) according to one or more of the preceding claims, wherein the plug element (22) subsequent to the contact pin (40), fastening means (42) and thereafter the connection part (41) and wherein the plug element (22 ) is held with the fastening means (42) in the attachment portion (14) of the plug body (11).

10. plug-side connector (10) according to one or more of the preceding claims, wherein parallel to the at least one Step (80) at least one preferably Riüenförmige Kodieraufnah- me (67) is provided.

11. Plug-side connector (10) after one or more of the pre. hergehen claims, wherein at least four projections (60) are arranged with the same circumferential distance in the opening (99).

12. Plug-side connector (10) according to one or more of the preceding claims, wherein the projections (60) are arranged such that they perform a Kodierfunktion.

13. socket-side connector (50) or socket (50) with a socket body (51) having at least one socket receptacle (53) for receiving a contact socket (52), wherein at the outer periphery of the socket receptacle (53) finger entry blocking means receiving means

(61) are arranged.

14. The socket-side connector (50) according to claim 13, wherein the finger entry blocking means receiving means (61) comprise at least one, preferably a plurality of projection receptacles (61) formed by the socket receptacle (53).

15. socket-side connector (50) according to one or more of the preceding claims, wherein the socket body (51) consists of electrically insulating material.

16. socket-side connector (50) according to one or more of the preceding claims, wherein, at least one Kodiemase (66) on the socket receptacle (53) is arranged.

17. socket-side connector (50) according to one or more of the preceding claims, wherein the contact socket (52) is a circular cylindrical contact socket.

18. The socket-side connector (50) according to one or more of the preceding claims, wherein the contact socket (52) is a RAD-SOK socket.

19. A connector (100) having a plug-side connector (10) according to one or more of the preceding claims and a book-side connector (50) according to one or more of the preceding claims and a mating or pulling apart of the book-side connector (50) and the plug-side connector (10) allows, in order to establish or disconnect an electrical contact.

20. Plug connection (100) according to claim 19, wherein in a plugged-together position of the connector (100) the socket receptacle (53) is received by the contact chamber (12).