EP1160925A2 - Contact électrique - Google Patents

Contact électrique Download PDF

Info

Publication number
EP1160925A2
EP1160925A2 EP01109647A EP01109647A EP1160925A2 EP 1160925 A2 EP1160925 A2 EP 1160925A2 EP 01109647 A EP01109647 A EP 01109647A EP 01109647 A EP01109647 A EP 01109647A EP 1160925 A2 EP1160925 A2 EP 1160925A2
Authority
EP
European Patent Office
Prior art keywords
zone
plug
plug contact
deformation
area
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
EP01109647A
Other languages
German (de)
English (en)
Other versions
EP1160925A3 (fr
EP1160925B1 (fr
Inventor
Werner Dreyer
Jens Gröger
Oliver Gründker
Stefan Knoke
Bernd-Joachim Kiel
Christian Brammer
Peter Homann
Stefan Klik
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.)
ZF CV Systems Hannover GmbH
Original Assignee
Wabco GmbH
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 Wabco GmbH filed Critical Wabco GmbH
Publication of EP1160925A2 publication Critical patent/EP1160925A2/fr
Publication of EP1160925A3 publication Critical patent/EP1160925A3/fr
Application granted granted Critical
Publication of EP1160925B1 publication Critical patent/EP1160925B1/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
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/112—Resilient sockets forked sockets having two legs
    • 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
    • H01R13/14—Resiliently-mounted rigid sockets

Definitions

  • the invention relates to an electrical plug contact for the electrical connection of the plug contact as Mating connector assigned with a electrical component according to claim 1.
  • Such electrical plug contacts are often in Applications where they are relative exposed to high levels of vibration, e.g. B. in motor vehicles. Because the connection principle in such Plug contacts on a clamping effect between the plug contact and the plug connection, it can depending on the strength of the clamping force or the resulting force Frictional force between the plug connection and the Plug contact and the strength of the vibrations to one Relative movement between the plug connection and the Come plug contact. This relative movement leads to one unwanted wear and depending on the material selection also to corrosion of plug contact and Plug connection due to friction.
  • An electrical plug contact that can be used in motor vehicles should therefore the problem of Avoid fretting or fretting corrosion and should meet other requirements if possible. So the plug contact should be small and compact, simple and inexpensive and preferably in one piece be producible. Furthermore, he should for the in the Automotive engineering is becoming increasingly popular with thick wire bonding be applicable. Methods and devices are for this type of connection technology, for example from EP 0 794 847 B1 and EP 0 649 701 A1 known.
  • EP 0 678 936 B1 describes a non-fretting corrosion Miniature socket known. The one specified there However, the socket is due to its relatively complicated Elaborate to produce shaping and therefore relative expensive. Furthermore is the one there Socket cannot be used for thick wire bonding.
  • resistance to deformation is as follows a material property is meant that is in the essentially inversely proportional to the elasticity of the material behaves.
  • the plug contact according to the invention can be particularly advantageous for connecting electromechanical components, e.g. B. pressure sensors or solenoid valves to control electronics be used.
  • electromechanical components e.g. B. pressure sensors or solenoid valves
  • the electromechanical components together with the control electronics in an electronic Control device arranged. Due to the deformability of the plug contact can also be used in manufacturing and Assembly of the electronic control unit occurring tolerances be balanced.
  • the entire mating zone in one leg of the L-shaped Area arranged while the other leg acts as a bending beam known from mechanics.
  • the problem of fretting or fretting corrosion is in the plug contact according to the invention the deformability of the intermediate zone reaches one Movement of the mating zone in relation to the connecting zone in Mating direction allowed to a certain extent, making smaller Movements of the connector z. B. as a result of Vibrations are compensated.
  • a second strain area in the intermediate zone provided with reduced resistance to deformation, such that the preferred direction of deformation of the along the first and second strain regions arranged from parallel spatial axes are.
  • the plug contact in the area of the connection zone and / or the intermediate zone angled several times, preferably in an S-shape or a meandering shape.
  • the plug contact is particularly compact and compact, which has the advantage that the plug contact too in electronic devices with limited space can be used.
  • connection zone also serves at the same time mechanical attachment of the plug contact, so that for mechanical fastening is not a special area or part of the plug contact must be provided.
  • connection zone also serves at the same time mechanical attachment of the plug contact, so that for mechanical fastening is not a special area or part of the plug contact must be provided.
  • the first and / or the second deformation area have as already explained, a lower resistance to deformation on than the remaining areas of the intermediate zone.
  • This can be achieved, for example be that the deformation area or areas at im essentially constant material cross section Be subjected to warming and thereby a higher Achieve elasticity.
  • the lower resistance to deformation is the lower resistance to deformation by reducing the material cross section reached the intermediate zone.
  • It is advantageous here to reduce the material thickness since this leads to a relatively large reduction of the area moment of inertia in comparison small reduction in the material cross-section leads, which has the advantage that the electrical resistance not unnecessary in the area of deformation areas is increased.
  • the plug zone at least two receiving tongues to accommodate the plug-in connection on the outside Contour when the plug connection is not inserted towards that facing away from the intermediate zone Tapered side of the mating zone.
  • This will counter known plug contacts, the outer contours the mating zone run essentially parallel to one another, the advantage achieved that with the same space requirement the insertion force or the clamping force with which the Recording tongues take up the plug connection, increased becomes. As a result, the frictional force is increased, and it can wear fretting and fretting corrosion even better be avoided.
  • the cross-sectional area of a receiving tongue linear in at least one section, preferably in the middle area of the tongue.
  • connection zone of the plug contact a bond area to which an electrical component can be connected by means of bonding is.
  • the Plug contact is preferably made of copper beryllium or copper-tin.
  • the bond area has a further development of the invention at least partially a coating of aluminum on. This allows the plug contact to be connected better can be used with the thick wire bonding technique, since an aluminum oxide layer is not for bonding is disadvantageous. It is also advantageous to use the bond area immediately before bonding a laser cleaning to undergo. In this case, if necessary the aluminum coating can be dispensed with.
  • connection zone (4) in the bond area (12) a galvanic applied bondable coating.
  • nickel phosphorus is preferably nickel phosphorus as the coating material used.
  • the Invention is a receptacle for the electrical Plug contact provided, which has holding means, which is used to accommodate the connecting zone of the Plug contact are suitable, such that the connection zone immovable in relation to the receiving device is held.
  • the plug contact can be relative easy to assemble and by overmolding the mounting device in the to be provided with the plug contact electrical device. This keeps the mating zone their mobility compared to the Connection zone, which is due to the immobile recording immovable in the receiving device the electrical device is arranged.
  • the manufacturing step of overmolding is different for example from the manufacturing step of casting in that an overmolding always to a rigid attachment leads while potting too elastic fastenings are possible, e.g. by using a permanently elastic casting compound.
  • the mounting of the cradle by injection molding is achieved on the one hand by using a relatively hard or inflexible material, preferably hard plastic, supported for the cradle, on the other hand through the use of an interior of the cradle labyrinth seal protecting the molding compound, which gives direct access to the encapsulation compound locked to the interior of the cradle.
  • the receiving device has Movement limitation means on which this mobility of the plug-in zone and / or the intermediate zone limit with respect to the receiving device.
  • Movement limitation means on which this mobility of the plug-in zone and / or the intermediate zone limit with respect to the receiving device.
  • the division level in one embodiment essentially vertically and in a further embodiment in substantially parallel to the spatial axis of the preferred Direction of deformation of the first deformation area is.
  • the electrical plug contact shown in FIGS. 1 to 3 (1) consists geometrically of an L-shaped Area (2, 5, 6, 7) to which an S-shaped or meandering area (4, 5, 6) connects.
  • the Plug contact (1) has one completely at one end in one leg of the L-shaped area arranged plug zone (2), which is suitable for a to record her assigned as a counterpart connector (3).
  • the plug contact points (1) one completely located in the S-shaped area Connection zone (4) on the electrical connection the plug contact with an electrical component, e.g. B. an electrical circuit board.
  • a bond pad (12) which is preferably by means of thick wire bonding with the electrical component is electrically connected.
  • the bond pad (12) is in one preferred embodiment of the invention in one piece with the plug contact (1).
  • the Bondpad (12) is preferably with a coating made of aluminum. As an alternative to the aluminum coating or in addition to this, the bond pad (12) undergo laser cleaning.
  • the plug contact (1) has an L-shaped and S-shaped area overlapping intermediate zone (5), which is deformable to the plug zone (2) a certain Movability in the direction of insertion (21) to compensate for To allow vibrations.
  • the intermediate zone (5) is as elongated part designed and serves as a bending beam.
  • the Area of the intermediate zone (5) a first (6) and a second (7) deformation area is provided.
  • the first Shape change area (6) is in the horizontal according to FIG. 1 Leg of the L-shaped area and the second Area of deformation (7) in the vertical leg of the L-shaped area, i.e. the intermediate zone (5) is between the deformation areas (6, 7) essentially angled at right angles.
  • the preferred directions of deformation of the first and second deformation area (6, 7) arranged along parallel spatial axes, as in Fig. 2 by the dashed lines (18, 19) is indicated. 1 with respect to FIG these axes thus perpendicular to the plane of the paper.
  • the shape change areas (6, 7) have a smaller one Resistance to deformation than the other areas of the Intermediate zone (5), which in a preferred embodiment the invention by a reduced material cross section compared to the other areas of Intermediate zone (5) is achieved.
  • a smaller material thickness is provided than in the other areas of the intermediate zone (5).
  • the shape change regions (6, 7) are preferred as Tapering of the material of the intermediate zone (5), e.g. B. by embossing. This will roughly halve the thickness and width of the intermediate zone material (5) provided.
  • the deformation areas (6, 7) can also through a local weakening of the material of the intermediate zone (5) with the same material cross-section be realized, e.g. B. by heating. Also one Combining these methods is beneficial.
  • connection zone (4) is also used for mechanical Attachment of the plug contact in a designated one Pick-up device, as in FIG. 5 to 8 will be explained in more detail below.
  • the plug-in zone (2) has two locating tongues (8, 9), which serve to accommodate the plug connection (3).
  • the plug zone (2) expanded to deform the receiving tongues (8, 9), so that the plug connection (3) by the spring action of the material of the receiving tongues (8, 9) becomes. Due to friction, the mating zone (2) compared to the plug connection (3) also in the plug direction (21) acting forces immobile as long as the Holding force caused by static friction is not is overcome.
  • the friction force should preferably be selected to be significantly higher. particularly advantageous about twice as high as that force necessary for the deformation. This allows in advantageously a permanent friction between the plug connection (3) and the plug zone (2) avoided be, e.g. B. when vibration loads occur. By avoiding frictional movements, the lifespan the plug connection increases because there is no frictional wear and there is no fretting corrosion.
  • the outer contour (22, 31) of the receiving tongues if the plug connection (3) is not plugged in the direction to the side facing away from the intermediate zone (5), d. H. in the present representation against the direction of insertion (21).
  • the outer contours run (22, 31) substantially parallel to each other, so that with a compact design, a high clamping force and as a result also a high friction to hold the Plug connection (3) is generated.
  • the cross-sectional area a receiving tongue (8, 9) changes at least in a partial area (10, 11) of the respective Pick-up tongue (8, 9) is essentially linear.
  • the receiving device (13) for receiving the plug contact (1) with the arranged therein Plug contact shown.
  • the cradle consists of two half-shells (16, 17), which is a division level have substantially perpendicular to the spatial axis (19) of the preferred direction of deformation of the first deformation area (6).
  • the Half-shells have interlocking interlocking Adjustment means (25) on the exact assembly and adjustment of the two half-shells (16, 17) to each other simplify.
  • FIG. 5 it can be seen how the plug connection (1) in the one half-shell (16) of the receiving device (13) is attached.
  • the connection zone (4) will thereby positively received by holding means (23, 24) and of these immovable in relation to the receiving device (13) held.
  • the mating zone (2) and the Intermediate zone (5) or at least most of it is movable to a limited extent in relation to the receiving device (13), the mobility of the intermediate zone (5) by means of movement limitation means (14, 15) is limited to a desired level.
  • the mobility should be plastic Deformation of the intermediate zone (5) can be avoided.
  • the receiving device (13) is first the plug contact (1) in the half shell (16), as in the Fig. 5, and then the second half-shell (17) to put on. Then it can be done this way resulting unit assembled in an electronic device be, for example, by overmolding the receiving device (13) in the electronic device.
  • the preferably half shells made of plastic (16, 17) serve for all-round power support the plug contact (1).
  • the assembly process described above preferably runs fully automatically using a the placement machine provided for this purpose.
  • a labyrinth seal (28) provided direct access the encapsulation compound to the inside of the receiving device (13) blocked.
  • the labyrinth seal (28) is preferred as a circumferential arranged on the half-shell (16) Projection formed in the assembled state of the Receiving device (13) the edge of the half-shell (17) overlaps.
  • FIG. 9 is in one of the half-shells (17) inserted Plug contact (1) for a clearer illustration shown again in perspective.
  • receptacles (13) in the manner of a multiple connector stringable are two examples of the possibility of stringing together several receiving devices (13) according to Art a multiple connector shown, in one Case with staggered receptacles (13), in the other case in an aligned arrangement.
  • the receiving devices (13) in a unified grid dimension stringable are two examples of the possibility of stringing together several receiving devices (13) according to Art a multiple connector shown, in one Case with staggered receptacles (13), in the other case in an aligned arrangement.
  • the receiving devices (13) in a unified grid dimension stringable are two examples of the possibility of stringing together several receiving devices (13) according to Art a multiple connector shown, in one Case with staggered receptacles (13), in the other case in an aligned arrangement.
  • the receiving devices (13) in a unified grid dimension stringable are two examples of the possibility of stringing together several receiving devices (13) according to Art a multiple connector shown, in one Case with staggered recepta
  • 11 to 14 are different configurations of the plug contact (1) according to the invention and its Connection by means of a bonding wire (26) to an as electrical component used electrical circuit board (20). 11 to 14 is used for a better illustration of the principle of a schematic and not used to scale. The shape change areas (6, 7) are there with crosses shown.
  • FIG. 11 corresponds to the embodiment of Fig. 1.
  • Figs. 11 to 14 is additional for each of the embodiments shown there specified a range (27) in which the as Hinge-serving first deformation area (6) advantageous to be ordered.
  • FIG. 15 to 17 is that shown in FIG. 12 Embodiment of the plug contact according to the invention (1) in connection with another embodiment the receiving device (13) as a three-sided view shown, the receiving device in FIG. 16 (13) is shown in sections.
  • the one there Receiving device (13) has a parallel to the spatial axis (19) of the preferred direction of deformation of the first deformation area (6) Division level at.
  • the receiving device (13) is made there also from the parts (16, 17), which are form-fitting interlocking adjustment means (25) are easy to assemble exactly with each other.
  • the Adjustment means (25) correspond in their execution and Mode of operation of the adjustment means already explained.
  • FIGS. 17 and 18 are the embodiment of the receiving device described here (13) specially for the inclusion of several Plug contacts (1) provided.
  • the plug contacts are initially part of one Sheet metal stamped and bent.
  • the resultant The lead frame is then in the channel-like Material excavations that are used as holding means (24, 29, 30) serve, provided lower part (17) of the receiving device (13) inserted.
  • the upper part (16) preferably has to the channel-like in the assembled state Material excavation opposite areas raised material webs (not shown).
  • FIG. 18 is only one of the plug contacts (1) with those already explained Provide reference numerals.
  • plug contacts described above and receiving devices are preferably used for contacting arranged in an electronic control unit electromechanical components, e.g. B. Pressure sensors or solenoid valves, with control electronics.
  • electromechanical components e.g. B. Pressure sensors or solenoid valves
  • control electronics e.g. B. Pressure sensors or solenoid valves

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
EP01109647A 2000-05-31 2001-04-19 Contact électrique Expired - Lifetime EP1160925B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10027125 2000-05-31
DE10027125A DE10027125A1 (de) 2000-05-31 2000-05-31 Elektrischer Steckkontakt

Publications (3)

Publication Number Publication Date
EP1160925A2 true EP1160925A2 (fr) 2001-12-05
EP1160925A3 EP1160925A3 (fr) 2002-07-03
EP1160925B1 EP1160925B1 (fr) 2004-07-07

Family

ID=7644312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01109647A Expired - Lifetime EP1160925B1 (fr) 2000-05-31 2001-04-19 Contact électrique

Country Status (3)

Country Link
US (1) US6537111B2 (fr)
EP (1) EP1160925B1 (fr)
DE (2) DE10027125A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
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Also Published As

Publication number Publication date
EP1160925A3 (fr) 2002-07-03
EP1160925B1 (fr) 2004-07-07
US20010049238A1 (en) 2001-12-06
DE50102780D1 (de) 2004-08-12
US6537111B2 (en) 2003-03-25
DE10027125A1 (de) 2001-12-06

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