EP2446509A1 - Connecteur électrique - Google Patents

Connecteur électrique

Info

Publication number
EP2446509A1
EP2446509A1 EP10725042A EP10725042A EP2446509A1 EP 2446509 A1 EP2446509 A1 EP 2446509A1 EP 10725042 A EP10725042 A EP 10725042A EP 10725042 A EP10725042 A EP 10725042A EP 2446509 A1 EP2446509 A1 EP 2446509A1
Authority
EP
European Patent Office
Prior art keywords
contact
blades
connector
basket
spring element
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.)
Granted
Application number
EP10725042A
Other languages
German (de)
English (en)
Other versions
EP2446509B1 (fr
Inventor
Markus Bihrer
Johann Krech
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.)
Lapp Engineering AG
Original Assignee
Lapp Engineering AG
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
Application filed by Lapp Engineering AG filed Critical Lapp Engineering AG
Publication of EP2446509A1 publication Critical patent/EP2446509A1/fr
Application granted granted Critical
Publication of EP2446509B1 publication Critical patent/EP2446509B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/18—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with the spring member surrounding the socket
    • 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
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/111—Resilient sockets co-operating with pins having a circular transverse section

Definitions

  • an electrical connector will be described below.
  • it is an electrical connector with a contact element, which has a contact lamella basket.
  • the contact lamella basket has at least two contact zones.
  • Under a connector is understood here according to the usual definition optionally a plug or a socket.
  • a voltage drop at contact surfaces between a plug and a socket contacting it can be reduced.
  • contact lamella baskets tend to concentrate the electric current flowing through them onto a few contact lamellae.
  • the document EP 1 478 055 A1 describes a contact lamellae basket of an electrical connector whose contact lamellae have at least two arcuate sections with opposite curvature.
  • a contact blade with three arcuate sections is shown in simplified form, of which the two outer sections - seen from the inside of the contact blade basket - are convex, whereas the middle section is concave. Now, if the plug is inserted into the contact lamella, this touches the two outer sections, whereby the contact blades are deflected radially.
  • the contact lamella form described in EP 1 478 055 A1 allows a constant contact force over many coupling cycles, it can lead to a one-sided loading of the contact lamellae.
  • the current transition focuses on individual contact blades. This can cause a strong heating of the current-carrying contact blades. Since the individual contact blades are separated by air gaps, the resulting heat loss can be distributed only insufficient.
  • the contact blades are usually made of a material having a positive temperature coefficient; Thus, the electrical resistance of the contact blades increases with temperature.
  • a major disadvantage of the contact sleeve described in DE 10 2005 017 988 B3 is the double contact resistance, since a voltage drop occurs both at the contact points between the outer contact socket and the spring element and the contact points between the spring element and plug. That the contact resistance increases due to fretting corrosion and other signs of wear is particularly critical for this form of contact sleeve.
  • the contact lamella baskets must be oversized and / or special galvanic coatings must be used to reduce the transition resistance.
  • a connector is proposed with a contact element having a base body having a contact lamella with at least a first and a second contact zone.
  • the contact zones are arranged one behind the other in the longitudinal direction of the plug connector and have a multiplicity of contact lamellae arranged side by side along the circumference of the contact lamella basket. Adjacent contact blades of a contact zone are separated by a gap.
  • an intermediate wall is provided, which forms an (electrically) conductive connection both between the contact blades of the first contact zone and the contact blades of the second contact zone, and between the individual contact blades of the first contact zone and the individual contact blades of the second contact zone ,
  • the contact lamella basket explained below is suitable for minimizing the electrical voltage drop at the contact points and at the same time distributing the electric current uniformly over the entire contact lamella basket.
  • the intermediate wall between the contact zones of the contact lamella basket enables a uniform distribution of the electrical current and the heat over the entire circumference of the contact lamella basket.
  • the intermediate wall can extend over the entire circumference of the contact lamella basket or only over a part thereof. In addition, it can be interrupted by a separating slot or be continuous.
  • the intermediate wall can thus increase the spring action of the entire contact lamella basket, so that the spring force - and thus the current flow - is distributed uniformly over the circumference of the contact lamella basket. This results in a clear advantage over the prior art, since a current concentration is effectively avoided. In conjunction with the higher spring force of the contact lamella basket thus an additional safety reserve is provided.
  • a spring element may be provided which applies a force acting transversely to the longitudinal direction of the connector on at least one of the contact zones of the contact lamella basket. If the connector is part of the socket, the force acts - in relation to the longitudinal axis of the connector - radially inward. If the connector is part of the connector, the force acts radially outward.
  • the contact basket and the spring element may be separate components.
  • the spring element may additionally Minim ⁇ least comprise a spring blade for each contact zone of the contact blades of the basket. Likewise, the spring element may have an intermediate wall Zvi ⁇ rule laid down for the respective contact zones of spring blades. If the spring force of the spring element acts radially inwardly, the spring element can be designed such that it at least partially surrounds the contact lamella cage in the circumferential direction. Since the spring force of the spring element and the spring force of the contact lamella basket are the same direction, the contact force can be increased by the spring element. Since a higher contact force reduces the contact resistance, a further safety reserve is provided by the spring element.
  • the contact blades of the different contact zones are arranged offset from one another in the circumferential direction. Additionally or alternatively, the contact blades of one or all contact zones may be arranged obliquely to the longitudinal axis of the connector.
  • the connector may be either a socket or a plug. Since the contact resistance between the plug and socket is reduced by the shape of the contact lamella basket, the contact lamella basket can be made of a non-alloyed metal without a special surface coating. Alternatively, it is also possible that the contact region or the entire base body has a surface coating, for example made of tin or a tin alloy. Due to the good electrical properties, copper or copper-containing alloys are used as material for the contact lamella basket.
  • the spring element may, but need not be, designed to conduct current. Therefore, for the spring element and a material with low electrical conductivity can be used, which is selected based on mechanical or manufacturing properties.
  • the spring element can be made of metal, for example steel, stainless steel, or plastic.
  • the spring element and the contact lamellae basket can be formed of different materials.
  • the spring element may be made of steel and the contact lamellae basket of copper.
  • the contact blades can also be designed so that the cross section of the contact blades tapers toward the middle, so that in the middle of the contact blades the distance to the adjacent contact blades is greatest. Additionally or alternatively, an embossed contact point can be provided on each contact blade. These contacting points can be located on the inside, the outside or on both sides of the contact lamella basket. Through the contact points on the outside can the spring force of the spring element can be specifically introduced into the contact blades. If the contacting points are located on the inside, then the contacting points form a defined current transition between coupled connectors.
  • the contact lamellae basket is designed as a stamped and bent part.
  • the spring element may be designed as a stamped and bent part.
  • the front part of the contact lamella basket can be designed so that interruptions are provided in a closing ring. Additionally or alternatively, in the transition region between the contact lamella basket and the solid part of the
  • Main body recesses may be provided. Due to the interruptions and / or recesses, the spring force of the contact blades can be additionally increased.
  • At least one of the recesses may be longer than the remaining recesses and thus form at least one long recess.
  • the two long recesses may be arranged diametrically opposite each other.
  • the intermediate wall can be interrupted at least once.
  • the at least one interruption of the intermediate wall can be provided in extension of a long recess. In this case, the at least one interruption of the intermediate wall can be provided obliquely to the longitudinal direction of the connector.
  • the main body of the connector may have a separating slot.
  • the separating slot in the main body of the connector can run for example in the longitudinal direction of the connector.
  • the spring element may also have a separating slot.
  • the separating slot in the spring element can run, for example, in the longitudinal direction of the spring element.
  • the separating slot in the main body of the connector can pass into a recess or a long recess.
  • the separating slot of the spring element can be arranged so as to be secure against rotation relative to the separating slot of the contact lamella basket.
  • the separating slots of the contact lamella basket and the spring element can be diametrically opposed.
  • the basic body of the present connector can be connected in many different ways to an electrical conductor, for example a crimp connection, a screw connection, a screwless clamping connection, an insulation displacement connection tion, a flat connector, a winding connection, a welded connection or a press-in connection can be provided.
  • an electrical conductor for example a crimp connection, a screw connection, a screwless clamping connection, an insulation displacement connection tion, a flat connector, a winding connection, a welded connection or a press-in connection.
  • contact lamella basket is suitable for use in conjunction with any plug geometries. Although only round plug are shown in the figures shown, the present invention, for example, suitable for a rectangular plug.
  • contact lamella basket per se or to install it in a larger unit. It is not necessary that the contact lamella basket is part of the main body of the connector.
  • Fig. 1 shows an embodiment of the connector with a contact lamellae basket.
  • Fig. 2 shows an embodiment of the spring element.
  • Fig. 3 shows a connector, wherein the spring element surrounds the contact lamella basket.
  • Fig. 4a shows a first view of an embodiment with long recesses.
  • 4b shows a second view of the embodiment with long recesses.
  • the variant of the connector explained below is designed as part of a socket.
  • the connector may also be part of a connector.
  • Fig. 1 shows the main body 12 of a contact element of a connector.
  • the front portion of the connector is a contact lamellae basket 14.
  • the rear portion is an electrical / mechanical recording / contacting for an electrical Ladder, for example, a crimp 16 is provided.
  • the main body 12 of the connector is executed in the embodiment shown in Rg. 1 as a stamped and bent part.
  • the base body 12 consists of a tubular bent, conductive material. This material may be an unalloyed metal, for example copper.
  • a separating slot 18 extends over the entire axial length of the main body 12.
  • the contact lamella basket 14 consists of a first and a second contact zone 20,21, which are electrically connected by an intermediate wall 22.
  • This intermediate wall 22 extends over the entire circumference of the contact lamella basket 14 and is interrupted by the separating slot 18.
  • a plurality of contact blades 24 is arranged, which bear against the plug in the coupled state.
  • the cross-section of the contact blades 24 tapers towards the center, so that the distance between adjacent contact blades in the middle is greatest. Through this taper, the mechanical stress can be evenly distributed in the lamella. Since, starting from the center, the cross section of the lamella increases toward the intermediate wall 22, the heat loss can be better dissipated from the contact zones 20, 21.
  • embossed contact point 26 In the middle, the contact blades, on the inside of the contact blade basket, an embossed contact point 26.
  • This embossed contact point 26 is provided as a defined contact with the plug.
  • embossed contacting points 26 can also be provided on the outside of the contact lamella basket. The advantages of such contacting points 26 are set forth in detail in the description of FIG.
  • the transitions between base body 12, contact blades 24 of the second contact zone 20, intermediate wall 22, contact blades 24 of the first contact zones 21 are carried out seamlessly without a material transition.
  • the Kotaktlamellen 24 go into a front end ring 28, whose ring structure is interrupted by a plurality of gaps. This open ring structure favors the elastic deformation of the contact blades 24 of the first contact zone 21. This allows the contact blades 24 of the first contact zone 21 to optimally adapt to the geometry of the plug.
  • 12 recesses 30 are provided on the base body. These recesses 30 may be configured as slots, whereby the gaps between the contact blades 24 are extended into the base body 12 inside. Due to the elasticity of the contact blades 24, these act like springs.
  • the contact blades 24 of the first and second contact zones 20,21 are arranged offset in the circumferential direction. Additionally or alternatively, the contact blades 24 may also be aligned obliquely to the longitudinal direction of the connector. The staggered arrangement of the contact blades 24 potential differences can be compensated more effectively. Also, the electric current flowing in the contact blades 24 can be better distributed to the individual contact blades 24. In addition, the mechanical wear, or the abrasion can be reduced by an offset arrangement of the contact blades 24. As a result, the wear on a contact lamella basket 14 having two contact zones 20, 21 and an offset arrangement of the contact lamellae 24 is not greater than in the case of a contact lamella basket with only one contact zone.
  • the base body 12 shown in FIG. 1 furthermore has on its outer side a double-sided annular bead 32 and at least one radially oriented nub 34. As a result, the base 12 can be easily and safely in a, not further illustrated for
  • an annular groove is provided, with which the double-sided bead 32 can be supported. As a result, the base body 12 is protected against slipping along the longitudinal axis of the connector.
  • recesses are provided in the contact carrier system of the connector for the at least one nub 34. As a result, a relative rotational movement between the base body 12 and the contact carrier system can be prevented.
  • the at least one nub 34 can also be used for positioning during assembly, for example when crimping the connection lines.
  • the radially outwardly projecting bead 32 and / or the radially outwardly protruding nub 34 may also be formed radially inwardly. In this case, correspondingly shaped projections are formed in the contact carrier system. Mixed forms of projecting / recessed nubs / bead can be realized.
  • Fig. 2 shows a spring element 40, which is designed as a stamped and bent part.
  • the spring element 40 consists of a tubular bent material. Since the spring element 40 is not intended to conduct current, the spring element 40 may be made of a material selected on the basis of its mechanical properties. It is advantageous to use a material with a large modulus of elasticity. So can for example Steel or stainless steel can be used. Since the modulus of elasticity of steel is greater than that of copper even at high temperatures, the contact force can be maintained at a high level.
  • the spring element 40 also has a separating slot 42.
  • the embodiment shown consists of three circumferential rings 44,46,48, which are interrupted by the separating slot 42. Between these circumferential rings 44,46,48, separated by gaps, spring blades 50,52,54,56 arranged.
  • the spring element 40 shown here has four spring blades 50,52,54,56. The spring effect is achieved in that the spring blades 50,52,54,56 compared to the rotating rings 44,46,48 in the axial direction a
  • This gap can be arranged diametrically opposite the separating slot.
  • the resulting arch structure favors the elastic deformation of the individual spring blades 50,52,54,56. So that the contact force applied to the first and the second contact zone 20, 21 is the same, it is expedient to design the spring plates 50, 52, 54, 56 in a similar manner. However, it is also possible to design the spring blades 50, 52, 54, 56 such that differences in the contacting forces of the individual contact zones 20, 21 can be compensated.
  • FIG. 3 shows an embodiment variant of the invention, in which the spring element 40 surrounds the contact lamella basket 14.
  • the spring blades 50,52,54,56 are arranged such that each pair of spring blades 50,52,54,56 a contact zone 20,21 surrounds.
  • the separating slot 18 of the main body 12 and the separating slot 42 of the spring element 40 may be arranged such that the two separating slots 18, 42 are diametrically opposed.
  • an anti-twist device not shown in the figures, can be provided. This rotation can, for example, consist of a specially provided recess and an engaging in the recess lamella.
  • the recess may be provided both on the base body 12 and on the spring element 40.
  • the decisive factor is that recess and blade are not provided on the same component and are superimposed in the installed state. Since the spring blades 50,52,54,56 the
  • Embrace contact zones 20,21 they can apply a force acting transversely to the longitudinal direction of the connector force on the contact zones 20,21 of the contact blade basket 14.
  • contacting points 26 can also be provided on the outside of the contact lamella basket 14. These contacting points 26 form the interface between contact lamella basket 14 and spring element 40. Since the spring element 40 rests only on the contacting points 26, the spring force selectively introduced into the contact blades 24. It is advantageous that the contacting points 26, viewed in the axial direction, are arranged in the middle of the contact blades 24 and that the outer contacting points 26 and the inner contacting points 26 are exactly opposite one another.
  • Fig. 4a shows a first view of an embodiment with long recesses.
  • Fig. 4b shows a second view of the embodiment with long recesses.
  • the first view may be a front view and the second view may be a rear view of the connector.
  • FIGS. 4 a and 4 b differs essentially only by long recesses 31 a, 31 b from the embodiment shown in FIG. 1. Therefore, a re-description of the structure of the connector is omitted.
  • the long recesses 31a, 31b may be provided instead of a recess 30 in the base body 12.
  • the long recesses 31a, 31b protrude further into the main body 12 than the recesses 30.
  • the first long recess 31a shown in FIG. 4a protrudes, for example, approximately four times as far into the main body 12 as a recess 30.
  • the first long recess 31a is thus four times longer than a recess 30.
  • the first long recess 31a may be shorter or longer.
  • the width of the first long recess 31a corresponds to FIG Width of a recess 30. It can be seen that the first long recess 31a can also be wider or narrower without any problem.
  • the first long recess 31a extends in the longitudinal direction of the connector into the base body 12 inside. At one end, the first long recess 31a merges into the separating slot 18 of the main body 12. Thus, the first long recess 31 a can also be regarded as a widened part of the separating slot 18. At the other end, the first long recess 31a merges into a gap which separates two adjacent contact blades 24 from each other.
  • the intermediate wall 22 is interrupted.
  • the interruption of the intermediate wall 22 is arranged obliquely to the longitudinal direction of the connector.
  • the interruption of the intermediate wall 22 may be in the gap between two Pass over the contact blades 24, in which also the first long recess 31a merges.
  • the interruption of the intermediate wall 22 may be arranged in extension of the first long recess 31a.
  • Fig. 4b shows a second long recess 31b. This corresponds in its length and width of the first long recess 31a. However, it is readily apparent that the second long recess 31b may also be wider, narrower, longer or shorter than the first long recess 31a. The second long recess 31b may be diametrically opposed to the first long recess 31a. Likewise, the second long recess 31b may also be arranged at a different angle to the first long recess 31a.
  • a further interruption is provided in the intermediate wall 22 in the intermediate wall 22, a further interruption is provided.
  • This interruption may correspond in form and arrangement of the interruption of the intermediate wall 22 described in connection with FIG. 4a.
  • the lever arm of the contact blade basket 14 can be changed. Shortening the long recesses 31a, 31b shortens the lever arm and extending the long recesses 31a, 31b into the base body 12 extends the lever arm of the contact lamella basket 14. Since the length of the lever arm has a significant influence on the contact lamella 14 applied contact force, can the shape of the long recesses 31a, 31b, the contact force of the contact blade basket 14 are varied.
  • the long recesses 31a, 31b effect a reduction of the contact force provided by the contact lens basket 14.
  • the force applied by the spring element 40 part of the contact force can be increased. Since the contact force can be applied more uniformly by the shape of the spring element 40 than by the contact lamellae basket, the long recesses 31a, 31b thus also effect that the contact force is applied more symmetrically.

Landscapes

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

Abstract

L'invention concerne un connecteur pourvu d'un corps de base, qui présente un panier de lamelles de contact comprenant au moins une première et une deuxième zone de contact. Ces zones de contact sont disposées l'une derrière l'autre dans la direction longitudinale du connecteur et ont une pluralité de lamelles de contact. Des lamelles de contact voisines sont séparées les unes des autres par une fente. Il est prévu, entre les zones de contact disposées l'une derrière l'autre, une cloison qui forme une liaison conductrice tant entre les lamelles de contact de la première zone de contact et les lamelles de contact de la deuxième zone de contact qu'entre les différentes lamelles de contact de la première zone de contact et les différentes lamelles de contact de la deuxième zone de contact.
EP10725042.5A 2009-06-25 2010-06-11 Connecteur électrique Active EP2446509B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009030463A DE102009030463A1 (de) 2009-06-25 2009-06-25 Elektrischer Steckverbinder
PCT/EP2010/003527 WO2010149282A1 (fr) 2009-06-25 2010-06-11 Connecteur électrique

Publications (2)

Publication Number Publication Date
EP2446509A1 true EP2446509A1 (fr) 2012-05-02
EP2446509B1 EP2446509B1 (fr) 2016-08-10

Family

ID=42635035

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10725042.5A Active EP2446509B1 (fr) 2009-06-25 2010-06-11 Connecteur électrique

Country Status (7)

Country Link
US (1) US8632356B2 (fr)
EP (1) EP2446509B1 (fr)
JP (1) JP5619155B2 (fr)
KR (1) KR101684584B1 (fr)
CN (1) CN102804511B (fr)
DE (1) DE102009030463A1 (fr)
WO (1) WO2010149282A1 (fr)

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Also Published As

Publication number Publication date
KR101684584B1 (ko) 2016-12-08
JP2012531021A (ja) 2012-12-06
CN102804511A (zh) 2012-11-28
EP2446509B1 (fr) 2016-08-10
US20120115351A1 (en) 2012-05-10
DE102009030463A1 (de) 2010-12-30
KR20120096921A (ko) 2012-08-31
US8632356B2 (en) 2014-01-21
WO2010149282A1 (fr) 2010-12-29
CN102804511B (zh) 2016-08-03
JP5619155B2 (ja) 2014-11-05

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