EP0594937B1 - Connexion électrique à fiche - Google Patents

Connexion électrique à fiche Download PDF

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Publication number
EP0594937B1
EP0594937B1 EP93108805A EP93108805A EP0594937B1 EP 0594937 B1 EP0594937 B1 EP 0594937B1 EP 93108805 A EP93108805 A EP 93108805A EP 93108805 A EP93108805 A EP 93108805A EP 0594937 B1 EP0594937 B1 EP 0594937B1
Authority
EP
European Patent Office
Prior art keywords
socket
plug
housing
locking
plug connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93108805A
Other languages
German (de)
English (en)
Other versions
EP0594937A1 (fr
Inventor
Gerhard Burkardt
Günter Wittwer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contact GmbH
Contact GmbH Elektrische Bauelemente
Original Assignee
Contact GmbH
Contact GmbH Elektrische Bauelemente
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE4236794A external-priority patent/DE4236794C2/de
Application filed by Contact GmbH, Contact GmbH Elektrische Bauelemente filed Critical Contact GmbH
Publication of EP0594937A1 publication Critical patent/EP0594937A1/fr
Application granted granted Critical
Publication of EP0594937B1 publication Critical patent/EP0594937B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/627—Snap or like fastening
    • H01R13/6277—Snap or like fastening comprising annular latching means, e.g. ring snapping in an annular groove

Definitions

  • the invention relates to an electrical connector according to the preamble of claim 1.
  • a connector is known for example from US-A-4 361 375 or GB-A-1 600 394.
  • the invention relates to an electrical connector having a plurality of electrical contacts, i.e. the plug has a large number of plug or socket contacts and the associated socket has a corresponding number of socket or plug contacts.
  • plug connections are often used to connect multi-core control lines to one another or to connect control lines to machines and devices or their operating unit.
  • the mobile control unit is connected to the main control via a control line, so that a construction crane selected as an example can be controlled not only from the crane operator's cab, but also from the ground with the mobile control unit.
  • a mobile operating unit is normally hard-wired to the control line, which in turn is hard-wired to the main control arranged in the area of the crane operator's cab.
  • a device for locking a connector in a socket has a latch which is pivotally attached to the front of the upper part of the socket and which, after the plug has been inserted into the socket, is rotated downward, as a result of which it projects into the receiving opening cross section of the upper part of the socket and the falling out or pulling out Connector blocked.
  • two guide grooves are arranged on the front of the upper part of the socket, into which a U-shaped slider is inserted after inserting the plug into the socket, which covers part of the receiving opening cross section of the socket and thus prevents the plug from falling out or being pulled out.
  • a restraint device for lever-operated interrupter and / or protective devices is known.
  • This device which relates to industrial sockets for connecting larger machines to the mains, has a multi-pin socket into which the retaining device consisting of a pivoted lever protrudes when an operating lever closing the circuit has been flipped when the plug is inserted into the socket.
  • the lever of the retaining device has a notch at one end which can engage around a retaining projection formed on the connector. The forced coupling of the circuit operating lever and the retaining device ensures that a plug can only be inserted into the socket when the circuit is interrupted and that the plug is prevented from being pulled out when the circuit is closed.
  • a locking device for connectors which has spring-loaded latching levers which can be rotated about pivot axes and which, with their pivot axes in the plug-in direction in the associated connector part, can be displaced from a position farther from the plug-in side of the connector part to a position closer to it, in contrast to spring action and are lifted out of a locking toothing with the other connector part by unlocking elements of the connector part.
  • This arrangement allows automatic unlocking when tensile forces act on the cable connected to the one connector part that exceed a predetermined value.
  • the plug of this plug connection has a resilient tab on the outside with two lateral projections, which lock behind two correspondingly arranged locking lugs when the plug is inserted into the socket.
  • An elongated extension of the resilient tab protrudes from the socket and enables the mechanical locking to be released by hand.
  • the invention has for its object to develop an electrical connector of the type mentioned in the preamble of claim 1 so that it can be unlocked manually as easily as possible even with high closing forces.
  • the release ring of the electrical connector With the release ring of the electrical connector according to the invention, the latter can be easily separated even with high holding forces of the lock.
  • the plug can be unlocked with one hand by a brief rotation of the release ring and pulled out of the socket almost simultaneously with the same hand.
  • the one or more bolt-shaped locking bodies are arranged in the socket housing in such a way that, in the locking position, they engage with part of their circumferential surface in a recess, for example an annular groove, on the connector housing.
  • the bolt-shaped locking body or elements are resilient into the opening cross section of the socket are biased, ie they partially protrude into the opening cross-section of the socket.
  • a preferred embodiment also releases the automatic locking automatically in response to a load that could otherwise lead to the connected electrical line being torn out.
  • the bolt-shaped locking bodies are arranged in such a way that their longitudinal axes extend substantially perpendicular to the longitudinal axis of the plug connection, but they do not intersect them.
  • bolt-shaped locking bodies for example, locking pins with rounded heads can be used in modified embodiments, which engage in corresponding spherical spherical recesses in the plug housing, or rotatably mounted levers can be used, on which projections are designed in the manner of a double-sided ramp, which are formed in the Project the opening cross-section of the socket and interact with appropriately designed recesses in the connector housing.
  • any desired threshold value can be set, after which the locking body or bodies automatically release the connector housing.
  • two bolts serve as locking bodies, which are arranged on both sides of an axis of the socket housing in the latter.
  • One end of each bolt is supported with play in a receiving opening in the socket housing, while the other end is supported with play in a slide.
  • the two slides are guided in the socket housing and each have a nose with the release ring in a positive connection that a rotation of the same by only 10 to 20 ° causes a linear displacement of the two slides in opposite directions, whereby the two bolts move to their unlocked position will.
  • each bolt by one near its other end, i.e. of the end, which is mounted in the associated slide, biasing spring biased into the locking position, the other ends of both bolts being arranged opposite to each other. In this way, an advantageous, largely symmetrical clamping state is achieved.
  • each bolt-shaped locking body is integrally connected to a leaf spring.
  • the locking body is integrally formed on the leaf spring which prestresses it resiliently into the opening cross section of the socket.
  • the leaf spring is preferably at least approximately semicircularly bent and arranged essentially concentrically to the bushing, the locking body being an essentially bolt-shaped section is the leaf spring, which engages, similarly to an embodiment described above, with part of its circumferential surface in a recess provided on the plug housing, for example in the form of an annular groove.
  • This embodiment also advantageously has a release ring for manual unlocking, which, for example, is rotatably fastened concentrically to the plug on the plug housing and is in mechanical connection with the locking body or bodies when the plug is inserted into the socket.
  • the release ring can just as well be arranged on the socket housing.
  • the housing of the plug and the socket have a round cross-sectional shape.
  • the invention is not limited to round plugs and sockets, but can equally well be used for electrical plug connections with, for example, a rectangular cross-sectional shape.
  • the plug connection according to the invention is also inexpensive to manufacture and simple to assemble.
  • an electrical connector 10 is shown with automatic locking and unlocking function.
  • the electrical plug connection 10 has a plug 12 with a plug housing 14 which is divided in two in the axial direction and a socket 16 with a socket housing 18 which is divided in two in the circumferential direction. Both the plug 12 and the socket 16 have a round cross-sectional shape.
  • an insulating body 20 which is prepared for receiving a multiplicity of plug contacts (not shown) in stepped through recesses 22.
  • the plug contacts are connected by soldering or crimping to different cores of an electrical line, not shown, which is guided from the rear through a bend protection 24 into a space 26 in the rear part of the plug housing 14.
  • the rear part of the connector housing 14 is screwed into its front part and, via a sealing ring 28, presses the insulating body 20 firmly against a radially inwardly projecting projection 30 formed in the front part of the connector housing 14.
  • a seal 32 is provided in the rear part of the connector housing 14 is arranged, encloses the supplied electrical line, so that the interior of the connector housing 14 is sealed against environmental influences.
  • a second insulating body 34 is fastened in the socket housing 18 and is intended to receive a number of socket contacts, not shown, which are arranged in through-recesses 35 and the number of which corresponds to the number of plug contacts which are arranged in the insulating body 20 of the plug 12.
  • the socket 16 with its housing 18 is in the example shown an integral part of a mobile, not shown Operating unit for cranes, ie the socket housing 18 is part of the housing of the mobile operating unit.
  • the socket housing can be permanently installed in an apparatus or machine housing, or the socket 16, like the plug 12, can have its own free housing.
  • Fig. 3 shows the inner structure of the socket 16 better.
  • the two bolts 36 have a round cross-sectional shape and extend on both sides of the axis S essentially parallel to it.
  • One end of each bolt 36 is movably mounted in a receiving opening 42 formed in the socket housing 18 and narrowing towards the end of the bolt.
  • At the bottom of each receiving opening 42 there is a hemispherical elevation 44 on which one end of the corresponding bolt 36 is supported with its end face.
  • the opposite, other end of each bolt 36 is held with play in a recess 46 each of a slide 48, the exact shape of which is shown in FIGS. 5a to 5d.
  • FIG. 4 shows the unlocked position of the bolts 36, in which they no longer protrude into the opening cross section of the bush 16.
  • the bolts 36 are pressed into their unlocked position by the two slides 48, one of which will now be described in more detail.
  • the bolts 36 accordingly tilt back and forth between the locking position and the unlocking position, the tilting axis being arranged in each case on the tip of the hemispherical elevation 44.
  • the slide 48 shown in FIGS. 5a to 5d is made of plastic by injection molding.
  • 5a shows a plan view of the side of the slider 48 on which the recess 46 for receiving the other end of a bolt 36 is provided.
  • the slider 48 is a substantially elongated component and has at its end section opposite the recess 46 a nose 52 which protrudes at right angles from the main body of the slider and, as the side view of the slider 48 shown in FIG. 5b shows, has a rounded, elongated cross section .
  • two projections 54 with a rectangular cross section are arranged, which delimit between them a groove 56 of likewise rectangular cross section (see in particular FIGS. 5a to 5c).
  • a correspondingly shaped web 58 engages in the groove 56, which is formed in the socket housing 18 (see FIG. 3) and serves to guide the slide 48.
  • the section C from FIG. 5a shown in FIG. 5c and the view of the slider 48 shown in FIG. 5d show that, in a modified embodiment, the slider 48 is not solid for reasons of weight.
  • the cross section of the recess 46 is not circular, but instead has two straight sections arranged opposite one another in accordance with FIG Recess 46 to allow tilting (see Fig. 4).
  • the lower edge of the recess 46 is not straight, but is semicircularly curved (see FIG. 5d), so that a bolt 36 in the direction of the longitudinal extension of the slide 48 has more freedom of movement than transversely to this direction.
  • FIGS. 6 and 7 show a release ring 60 which is rotatably held concentrically with the socket 16 on the socket housing 18 (see FIG. 1).
  • the release ring 60 has a gripping surface 62 and a flange 64 projecting therefrom in the axial direction with a substantially L-shaped cross section (see FIGS. 1 and 6).
  • the radially projecting leg of the flange 64 engages in a circumferential groove 65 formed on the socket housing 18, so that the release ring 60 is held on the socket housing 18 and is arranged concentrically to the opening cross section of the socket 16.
  • the flange 64 of the release ring 60 has two mutually opposite cutouts 66.
  • the release ring 60 When assembling the bushing 16, the release ring 60 is used so that the nose 52 of a slide 48 engages in each recess 66. In this way, the two sliders 48 are mechanically coupled to one another via the release ring 60. A rotation of the release ring 60 by 10 to 15 ° clockwise thus causes a linear displacement of the two sliders 48 in the socket housing 18 by a few millimeters, whereby the bolts 36 received with their other end in the sliders 48 from the locking position shown in FIG the unlocked position shown in Fig. 4 are moved. The slider 48 move transversely to the axis labeled S in FIG.
  • the plug 12 can also be pulled out of the socket 16 in the locked position, since the depth of the annular groove 40 on the plug housing 14 is less than half the cross-sectional dimension of a bolt 36 (see FIG. 1). However, the clamping force transmitted from the coil springs 50 to the plug housing 14 via the bolts 36 must then be overcome.
  • suitable selection of the dimensions of the bolt and the ring groove as well as their geometries, in conjunction with springs adapted to them almost any value can be preset from which the socket 16 releases a plug 12 even without actuating a release ring 60.
  • the socket housing 18 is formed in two parts essentially along a line T shown in FIGS. 2 to 4. This design considerably simplifies the assembly and assembly of the bushing 16. It is only necessary to ensure that when the two housing halves are joined together, the other end of each bolt 36 engages in the corresponding recess 46 of the slider 48 and its lugs 52 in the recesses 66 of the release ring 60.
  • FIGS. 9 to 12 show a modified exemplary embodiment of the electrical plug connection 10, which differs from the previously described embodiment mainly by the design of the locking body including the associated springs.
  • the function of a bolt 36 and the associated spring 50 is carried out in the exemplary embodiment according to FIGS. 9 to 12 by a one-piece locking component 70, which consists of an at least approximately circularly curved leaf spring 72 and a projection 74 formed on its inner surface and forming a locking body ( see in particular FIGS. 11a and 11b).
  • each recess 76 extends extending circumferentially from a narrow guide slot 78 located at one end to its other end.
  • Each leaf spring 72 is precisely guided in the circumferential direction of the bush with an end section in the corresponding guide slot 78.
  • the remaining part of the leaf spring 72 or of the locking component 70, which is not arranged in the guide slot 78, can move in the radial area in the enlarged area of the associated recess 76, in that it rotates about a point P located at the exit of the guide slot 78.
  • the points P of both locking components 70 lie on a common axis N which intersects the longitudinal axis of the bush 16.
  • FIG. 9 shows the unlocked position, in which the two projections 74 do not protrude into the opening cross section of the bush 16 defined by the edge A
  • FIG. 10 shows the locked position, in which the projections 74 - like the bolts 36 of the previously described embodiment - in protrude the opening cross section of the socket 16.
  • the locking position represents the normal position, i.e. the locking components 70 are prestressed in this position and can only be brought into the unlocking position according to FIG. 9 by the action of force.
  • each locking component 70 protrudes in the axial direction and is bent radially outward.
  • the release ring in the modified exemplary embodiment is rotatably fastened to the plug housing 14 and is likewise arranged coaxially to the longitudinal axis of the plug connection 10 (not shown).
  • the release ring has numerous axially projecting lugs which are evenly spaced in the circumferential direction, two of which engage the parts 80 of the locking components 70 when the plug 12 is inserted into the socket 16 when the release ring is rotated to manually unlock the plug connection .
  • Each nose of the release ring therefore presses against the locking component at a point designated 82 when it is rotated 70 and moves it from the locking position shown in Figure 10 to the unlocking position shown in Figure 9.
  • the numerous lugs present on the release ring of the modified embodiment ensure that insertion of the plug 12 into the socket 16 is usually possible without problems. Should one of the lugs exactly hit the axially protruding part 80 of a locking component 70 when inserting the plug 12 into the socket 16, a minimal rotation of the release ring is sufficient to allow the plug 12 to be fully inserted into the socket 16.
  • the installation of the locking components 70 will now be described with reference to the longitudinal section of the insulating body 34 ′ shown in FIG. For reasons of clarity, the passage recesses for socket contacts present in the insulating body 34 'are not shown in FIG.
  • the locking components 70 are simply pushed into the bottom in FIG. 12 through an annular gap 84 present in the insulating body 34 '.
  • the upper stop serves radially protruding into the recesses 76 guide lugs 86 (see also Fig. 9 and 10), which at the same time prevent the locking components 70 from being pulled out of the socket when pulling the plug 12 out of the socket 16.
  • the modified embodiment of the electrical connector just described has all the advantages of the first embodiment, i.e. the value from which the socket 16 releases an inserted plug 12 under tensile load can be set precisely via the spring force of the leaf springs 72 and the geometry of the projections 74.
  • a particular advantage of the second embodiment is its simpler assembly and the possibility of keeping the diameter of the plug connection significantly smaller without functional disadvantages for a given diameter of the insulating body.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Claims (9)

  1. Connecteur électrique à fiches (10), en particulier en vue de la liaison d'une ligne de commande à une unité de commande mobile, équipé d'une prise (16) ainsi que d'une fiche (12) pouvant être introduite dans la prise, qui présentent chacune un boîtier (18, 14) et au moins un élément de verrouillage déplaçable disposé dans le boîtier (18) de la prise (16) en vue du verrouillage par conformation d'un boîtier de fiche (14) introduit dans la prise avec la prise (16), ledit au moins un élément de verrouillage verrouillant automatiquement le boîtier de fiche (14) avec le boîtier de prise (18) lors de l'introduction de la prise (16), caractérisé en ce que
    - le ou les éléments de verrouillage sont en forme de tige et sont disposés dans le boîtier de prise (18) de sorte qu'ils pénètrent dans la position de verrouillage avec une partie de leur surface périphérique dans un évidement prévu sur le boîtier de fiche (14), et
    - le boîtier de prise (18) ou le boîtier de fiche (14) présente une bague de dégagement en vue du déverrouillage manuel du boîtier de fiche (14) introduit.
  2. Connecteur à fiches selon la revendication 1, caractérisé en ce que chaque élément de verrouillage est précontraint élastiquement dans la section d'ouverture (A) de la prise (16) et libère automatiquement le boîtier de fiche (14), lorsqu'une force de traction dirigée sensiblement axialement, qui dépasse une valeur prédéterminée, exercée sur le connecteur à fiches (10).
  3. Connecteur à fiches selon la revendication 1 ou 2, caractérisé en ce que la bague de dégagement (60) est fixée à rotation concentriquement à la prise (16) sur le boîtier de prise (18) et est reliée mécaniquement avec le ou les éléments de verrouillage.
  4. Connecteur à fiches selon la revendication 3, caractérisé en ce qu'en tant qu'éléments de verrouillage sont utilisées deux tiges (36) qui sont disposées de part et d'autre d'un axe (S) du boîtier de prise (18), dont une extrémité est disposée dans une ouverture de réception (42) dans le boîtier de prise (18) et dont l'autre extrémité est disposée dans une glissière (48) disposée également dans le boîtier de prise (18), les deux glissières (48) étant verrouillées par conformation chacune par l'intermédiaire d'un bec (52) avec la bague de dégagement (60).
  5. Connecteur à fiches selon la revendication 4, caractérisé en ce que chaque tige (36) est précontrainte dans la position de verrouillage par un ressort (50) disposé à proximité de son autre extrémité, les autres extrémités des deux tiges (36) étant disposées opposées l'une à l'autre.
  6. Connecteur à fiches selon la revendication 1 ou 2, caractérisé en ce que la bague de dégagement est fixée à rotation concentriquement à la fiche (12) sur le boîtier de fiche (14) et lors de l'introduction de la fiche (12) dans la prise (16) est reliée mécaniquement avec le ou les éléments de verrouillage.
  7. Connecteur à fiches selon la revendication 6, caractérisé en ce que chaque élément de verrouillage est réalisé d'une seule pièce avec un ressort à lame (72).
  8. Connecteur à fiches selon la revendication 7, caractérisé en ce que le ressort à lame (72) est courbé au moins approximativement en forme de demi-cercle et est disposé sensiblement concentriquement à la prise (16).
  9. Connecteur à fiches selon l'une quelconque des revendications précédentes, caractérisé en ce que les boîtiers (14, 18) présentent une forme circulaire en coupe.
EP93108805A 1992-10-30 1993-06-01 Connexion électrique à fiche Expired - Lifetime EP0594937B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4236794A DE4236794C2 (de) 1991-12-02 1992-10-30 Elektrische Steckverbindung
DE4236794 1992-10-30

Publications (2)

Publication Number Publication Date
EP0594937A1 EP0594937A1 (fr) 1994-05-04
EP0594937B1 true EP0594937B1 (fr) 1997-08-20

Family

ID=6471799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93108805A Expired - Lifetime EP0594937B1 (fr) 1992-10-30 1993-06-01 Connexion électrique à fiche

Country Status (3)

Country Link
EP (1) EP0594937B1 (fr)
AT (1) ATE157203T1 (fr)
ES (1) ES2107582T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1007765C2 (nl) * 1997-12-11 1999-06-14 Ascom Tateco Ab Stekkerverbinding.
US9735502B2 (en) 2013-12-13 2017-08-15 Hewlett Packard Enterprise Development Lp Connector with a retainer assembly
DE102017130675A1 (de) * 2017-12-20 2019-06-27 Insta Gmbh Elektrisches/elektronisches Installationsgerät
DE102017130678A1 (de) * 2017-12-20 2019-06-27 Insta Gmbh Elektrisches/elektronisches Installationsgerät
CN108963626B (zh) * 2018-07-17 2024-02-09 北京突破电气有限公司 一种自锁插头
CN113922152B (zh) * 2021-08-26 2023-09-15 杭州航天电子技术有限公司 一种便于集成式连接器插合锁紧的机构

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1600394A (en) * 1978-05-10 1981-10-14 Futters London Ltd Electrical connectors
US4361375A (en) * 1980-09-15 1982-11-30 Switchcraft, Inc. Miniature audio connector
DE3539988A1 (de) * 1985-11-11 1987-05-14 Siemens Ag Verriegelungsvorrichtung fuer steckverbinder
FR2664754B1 (fr) * 1990-07-11 1992-10-16 Interconnection Inf Connecteur male pour reseau de communication informatique et/ou telephonique.

Also Published As

Publication number Publication date
EP0594937A1 (fr) 1994-05-04
ATE157203T1 (de) 1997-09-15
ES2107582T3 (es) 1997-12-01

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