EP1492202B1 - Contact electrique avec joint d' étancheité - Google Patents

Contact electrique avec joint d' étancheité Download PDF

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Publication number
EP1492202B1
EP1492202B1 EP20040014506 EP04014506A EP1492202B1 EP 1492202 B1 EP1492202 B1 EP 1492202B1 EP 20040014506 EP20040014506 EP 20040014506 EP 04014506 A EP04014506 A EP 04014506A EP 1492202 B1 EP1492202 B1 EP 1492202B1
Authority
EP
European Patent Office
Prior art keywords
contact
conductor
projections
cylinder head
receiving
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
EP20040014506
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German (de)
English (en)
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EP1492202A1 (fr
Inventor
Johannes Martinus Paulus Janssen
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.)
TE Connectivity Nederland BV
Original Assignee
Tyco Electronics Nederland BV
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 Tyco Electronics Nederland BV filed Critical Tyco Electronics Nederland BV
Priority to EP20040014506 priority Critical patent/EP1492202B1/fr
Publication of EP1492202A1 publication Critical patent/EP1492202A1/fr
Application granted granted Critical
Publication of EP1492202B1 publication Critical patent/EP1492202B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5205—Sealing means between cable and housing, e.g. grommet
    • H01R13/5208—Sealing means between cable and housing, e.g. grommet having at least two cable receiving openings
    • 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
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/521—Sealing between contact members and housing, e.g. sealing insert

Definitions

  • the invention relates to an electrical contact and, in particular, to a contact having at least one seal member that forms a seal between a contact receiving passageway and the contact received therein such that liquid is prevented from passing through the contact receiving passageway. Moreover, the invention relates to an electrical connector comprising at least one of such contacts.
  • One field of use of such a contact and electrical connector is to electrically connect electrical conductors on an outer side of a cylinder head wall of a combustion engine with electrical conductors on an inner side of the cylinder head wall of the combustion engine.
  • Examples of such a use include terminating electrical components on the inner side of the cylinder head wall for engine brake management or terminating electromagnetic fuel valves for fuel injection management.
  • the contacts and the electrical connectors are exposed to vibrations, high temperatures, and external forces, particularly on the outer side of the cylinder head wall.
  • the electrical connector has a housing with a plurality of contact receiving passageways that receive contacts.
  • Each of the contacts has a body portion including a conductor engaging end for forming an electrical connection with a corresponding conductor and a terminal end for engaging a mating contact of a mating connector.
  • First and second recesses are formed along each of the body portions for receiving first and second seal members.
  • the first and second seal members are, for example, O-rings, and form, a seal between the contact and the contact receiving passageway for preventing liquid from passing through the contact receiving passageway.
  • US 5 564 947 A discloses a molded sealable electrical connector including a shell and an insert having contacts and lead wires overmolded within the insert and engagement means to provide press fit of the insert within a shell providing for a liquid and air-tight receptacle without the use of potting.
  • the engagement means includes projections on the insert.
  • the insert also includes a flange and an end lip for securing the insert within the shell.
  • the housing of the electrical connector is mounted in a passageway of the cylinder head wall such that the mating connector is on the inner side of the cylinder head wall.
  • the number of contacts that the electrical connector can accommodate is correspondingly limited. For example, if the housing is mounted in a passageway having a diameter of 30 millimeters (mm), then the electrical connector can only accommodate eight contacts.
  • the location of the plug connection of the two mating connectors is at the cylinder head wall. Because the cylinder head wall is exposed to particularly strong vibrations, the plug connections are affected by the vibrations, particularly, the contacts having smaller dimensions. Moreover, vibrations and forces exerted on the conductors may cause the contacts to tilt as a result of the resilience of the first and second seal members. If the contacts tilt, the first and second seal members may become deformed. If the first and second seal members become deformed, the seal between the contact and the contact receiving passageway may deteriorate. Because the risk of such deterioration increases with a decrease in the dimensions of the first and second seal members, the ability to reduce the dimensions of the contacts is further limited. It is therefore desirable to provide an electrical connector that can house more than eight contacts in a passageway having a diameter of 30 mm without adversely effecting the performance of the electrical connector.
  • the invention provides an electrical contact as indicated in claim 1 and an electrical connector as indicated in claim 8, which can be used as indicated in claims 16 and 17. Further embodiments of the contact and the connector of the invention are indicated in the dependent claims.
  • the first plurality of axially spaced annular projections are pre-bent, that is to say they are already bent towards the first conductor receiving end in a relaxed state, i.e. before the contact is pushed into the contact receiving passageway.
  • the first plurality of axially spaced annular projections are straight in a relaxed state and are bent towards the first axial end of the contact receiving passageway only when the contact is inserted into the contact receiving passageway.
  • first and second conductors that are connected to the contact of the invention are solidly secured to the respective first and second conductor receiving ends of the contact, there is no plug connection in the region of the cylinder head wall so that there is a stable connection with high resistance against vibrations and mechanical forces applied to the first and second conductors.
  • An embodiment of the invention comprises a second plurality of axially spaced annular projections on the side of the first plurality of axially spaced annular projections which faces away from the first conductor receiving end of the contact body.
  • the radial extension of the second plurality of axially spaced annular projections is designed such that, when the contact is pushed into the contact receiving passageway, outer ends of second plurality of axially spaced annular projections sealingly contact the inner wall of the contact receiving passageway.
  • second plurality of axially spaced annular projections are provided on the first seal member. In another embodiment of the invention, the second plurality of axially spaced annular projections are provided on a second seal member.
  • the second plurality of axially spaced annular projections are not pre-bent but are straight in a relaxed sate.
  • the second plurality of axially spaced annular projections are dimensioned with respect to the inner diameter of the contact receiving passageway such that the second plurality of axially spaced annular projections are bent towards the first axial end of the contact receiving passageway less than the outer ends of the first plurality of axially spaced annular projections when the contact is inserted into the contact receiving passageway.
  • the second plurality of axially spaced annular projections are dimensioned with respect to the inner diameter of the contact receiving passageway such that they are not bent when the contact is inserted into the contact receiving passageway but instead contact the contact receiving passageway in a substantially straight state.
  • the purpose of the second plurality of axially spaced annular projections is to prevent a liquid, such as water, occurring on the second axial end of the contact receiving passageway from passing through the contact receiving passageway to the first axial end. If the contact was only provided with the first plurality of axially spaced annular projections that has outer ends bent towards the first axial end of the contact receiving passageway, it might be easy for the water to pass the bent first plurality of axially spaced annular projections when there is no engine oil occurring at the first axial end of the contact receiving passageway urging the bent outer parts of the first plurality of axially spaced annular projections towards the inner wall of the contact receiving passageway, e.g. when the engine is not operating.
  • the second plurality of axially spaced annular projections By dimensioning the second plurality of axially spaced annular projections such that they do not bend or only slightly bend when inserting the contact into the contact receiving passageway, the second plurality of axially spaced annular projections remain straight or substantially straight and touch the inner wall of the contact receiving passageway substantially without bending so that the second plurality of axially spaced annular projections present a resistance against the passing of water occurring at the second axial end of the contact receiving passageway, which is higher than that of the first plurality of axially spaced annular projections bent towards the first axial end of the contact receiving passageway.
  • the number of the plurality of axially spaced annular projections on the seal member or seal members depends on the desired sealing effect. The more axially spaced annular projections the better the sealing effect. In practical embodiments, the number of first and second axially spaced annular projections is between two and four, however, other numbers are possible. In a practical embodiment having the first and second seal members, the first seal member is provided with three of the first axially spaced annular projections and the second seal member is provided with three of the second axially spaced annular projections.
  • the single seal member is provided with three of the first axially spaced annular projections and two of the second axially spaced annular projections.
  • Other numbers of axially spaced annular projections are possible, for example, three of the first axially spaced annular projections and three of the second axially spaced annular projections.
  • Tilting of the contact relative to the contact receiving passageway does scarcely or not at all affect the sealing effect either of the first plurality of lips as their bent outer ends remain seated on the inner wall of the contact receiving passageway or of the second plurality of lips if there is a sufficient number thereof.
  • the contact has a contact body comprising at least two radial flanges which are located between the first and second axially spaced annular projections and the first axial end of the contact receiving passageway and have an outer diameter which is substantially equal to the inner diameter of the contact receiving passageway.
  • the outer surfaces of the flanges either have radial teeth, which indent into the material of the inner wall of the contact receiving passageway, or the outer surfaces of the flanges are smooth and are adjusted to the inner diameter of the contact receiving passageway without clearance so that the flanges are received in a press-fit in the contact receiving passageway, for example, with a small clearance of a few 1/10 mm.
  • the contact is stabilised by potting as well.
  • the housing comprises a shroud at the first axial face of the housing enclosing part of a first conductor which is adjacent to the first conductor receiving end of the at least one contact. At least a part of the shroud adjacent to the first conductor receiving end of the contact is filled with potting material whereby at least the first conductor receiving end of the at least one contact as well as the first conductor fixed thereto are embedded in the potting material.
  • Such potting material fixes the contact and the conductor, dampens cable movements, and prevents motor oil from intruding between leads or strands of the conductor or between leads or strands and the insulating sheath of the conductor and flowing back to the electrical connector fixed to the conductor at an end of the conductor remote from the housing.
  • the seal member or members are made of a heat-resistant, stress-resistant and contaminant-resistant resilient material which retains permanent elasticity even in harsh environments. Suitable materials are VMQ and FVMQ.
  • the respective seal member is press-fit mounted onto the contact body.
  • the respective seal member is slid over the contact body.
  • the seal member may be held in position by means of one or more annular ribs formed on the circumference of the contact body co-operating with complementary annular recesses formed in the inner circumference of the seal member.
  • the respective seal member is moulded or vulcanised onto the contact body.
  • the contact body has a solid middle portion, a tubular first conductor engaging portion extending between the first conductor receiving end of the contact body and,the solid middle portion for receiving the first conductor, and a tubular second conductor engaging portion extending between the second conductor receiving end of the contact body and the solid middle portion for receiving the second conductor.
  • the solid middle portion prevents liquid creeping along the first and second conductors, either on the outside of the conductor, between the conductor and an insulating coating of the conductor, or between strands of the conductor, from passing from one of the conductor receiving ends of the contact to the other conductor receiving end of the contact.
  • At least one of the conductor engaging portions comprises a crimp section for forming a crimp connection with the respective conductor.
  • the before-mentioned tube portions might form such crimp sections.
  • the contact receiving passageways could be formed in the cylinder head wall itself, which is possible if the cylinder head wall is made of an electrically insulating material, such as, ceramic or plastic, or if the cylinder head wall is made of an electrically conducting material, such as, steel, and the inner wall of each of the contact receiving passageways is coated with an electrically insulating material.
  • This arrangement allows a rather large number of contacts to be arranged in a limited space of the cylinder head wall. However, this arrangement is not applicable if, before pushing the contact into the respective contact receiving passageway, both ends of a harness comprising the contact already have a connector attached thereto that can not be passed through the contact receiving passageway formed in the cylinder head wall.
  • the invention provides an electrical connector.
  • the electrical connector comprises a housing made of an insulating material.
  • the housing has a first axial face and a second axial face and at least one substantially cylindrical contact receiving passageway extending between the first and the second axial face.
  • the contact receiving passageway has a predetermined inner diameter and comprises an electrical contact of the invention as described before.
  • the housing has a substantially cylindrical outer peripheral surface which is provided with a peripheral outer seal member for sealing a housing receiving passageway of a wall, e.g., a cylinder head wall.
  • the contact of the invention for electrically connecting through a cylinder head wall of an engine a first conductor on an inner side of the cylinder head wall and a second conductor on an outer side of the cylinder head wall, wherein the contact receiving passageway receiving the contact forms a channel through the cylinder head wall.
  • the first axial end of the contact receiving passageway is adjacent to the inner side of the cylinder head wall and the second axial end of the contact receiving passageway is adjacent to the outer side of the cylinder head wall.
  • the at least one sealing member is mounted on the contact to prevent pressurised oil on the inner side of the cylinder head wall from passing through the contact receiving passageway to the outer side of the cylinder head wall.
  • the connector of the invention for electrically connecting through a cylinder head wall of a combustion engine at least one first conductor on an inner side of the cylinder head wall and at least one second conductor on an outer side of the cylinder head wall, wherein the housing of the connector is received in a connector receiving passageway of the cylinder head wall with the first axial face of the housing being adjacent to the inner side of the cylinder head wall and the second axial face of the housing being adjacent to the outer side of the cylinder head wall.
  • the at least one sealing member is mounted on the at least one contact received in the at least one contact receiving passageway of the housing to prevent pressurised oil on the inner side of the cylinder head wall from passing through the contact receiving passageway to the outer side of the cylinder head wall.
  • Figure 1 shows an electrical connector 11.
  • the electrical connector 11 will be described in greater detail hereafter and will be described by way of example as an electrical lead-through through a cylinder head wall 26 of a combustion engine of a truck.
  • the electrical connector 11 includes an insulating housing 13 having a first axial face 15 and a second axial face 17. Between the first and second axial faces 15, 17 of the housing 13 is a seal receiving recess 21, which is formed to receive an outer seal member 23, such as an O-ring, shown in Figure 2 . As shown in Figure 5 , the outer seal member 23, for example, seals a housing receiving passageway 25 of a cylinder head wall 26 that has an inner surface 27 and an outer surface 28.
  • the second axial face 17 has a flange 29.
  • the flange 29 radially extends from one peripheral side of the housing 13 and has a flange opening 31 for mounting the flange 29 to the cylinder head wall 26 with, for example, a screw.
  • a grommet 33 having a shape of a half shell axially extends from the second axial face 17 of the housing 13 adjacent to the flange 29.
  • the grommet 33 has a grommet opening 35.
  • the second axial face 17 is further provided with an annular recess 105.
  • the first axial face 15 comprises an axially extending shroud 36.
  • the shroud 36 forms a cylindrical cavity 91 at the first axial face 15 of the housing 13.
  • each of the contact receiving passageway 18 has a first axial end 19 and a second axial end 20.
  • the first axial end 19 may be formed to have bevels 109 that taper inward toward the contact receiving passageway 18, as best shown in Figure 6 .
  • each of the contacts 37 has a substantially cylindrical contact body 43.
  • the contact body 43 has a main part with an outer diameter 45 smaller than an inner diameter 47 of the respective contact receiving passageway 18.
  • the contact body 43 has a tubular first conductor engaging portion 49 at a first conductor receiving end 51 and a tubular second conductor engaging portion 53 at a second conductor receiving end 55.
  • the first conductor engaging portion 49 is in crimp connection with a first stranded conductor 57 that is received in the first conductor engaging portion 49.
  • the first stranded conductor 57 extends from the first conductor receiving end 51 of the contact body 43.
  • the second conductor engaging portion 53 is in crimp connection with a second stranded conductor 59 received in the second conductor engaging portion 53.
  • the second stranded conductor 59 extends from the second conductor receiving end 55 of the contact body 43.
  • the contact body 43 has a solid middle portion 61 extending between the tubular first and second conductor engaging portions 49, 53.
  • the solid middle portion 61 prevents engine oil, for example, from reaching the second conductor engaging portion 53 by preventing the engine oil from creeping along strands of the first conductor 57 and/or between the strands and an outer insulating coating of the first conductor 57 and/or along the outside of the outer insulating coating.
  • water creeping along the strands of the second conductor 59 and/or between the strands and an outer insulating coating of the second conductor 59 and/or along the outside of the outer insulating coating is prevented from reaching the first conductor engaging portion 49.
  • the contact body 43 has first and second radial collars 63, 65.
  • the first radial collar 63 is located at the first conductor receiving end 51 of the contact body 43 and the second radial collar 65 is located at the inner end of the first conductor engaging portion 49.
  • Each of the first and second radial collars 63, 65 may be formed to have entrance bevels 109.
  • the outer surfaces of the first and second radial collars 63, 65 may be formed to have radial teeth (not shown) that indent into the material of the inner wall of the contact receiving passageway 18.
  • first and second radial collars 63, 65 may be made smooth and adjusted to the inner diameter of the contact receiving passageway 18 either without clearance or with a small clearance of a few millimeters, for example 1/10 mm, so that the first and second radial collars 63, 65 may be press-fit in the contact receiving passageway 18.
  • the first and second radial collars 63, 65 fix the contact 37 within the contact receiving passageway 18, for example, by press-fitting, and prevent the contact body 43 from tilting within the passageway 18.
  • First and second seal members 67, 69 are mounted on the contact body 43 at an axial distance from each other by, for example, press-fit mounting, moulding, or vulcanising the first and second seal members 67, 69 onto the contact body 43.
  • the first and second seal members 67, 69 are made of a heat-resistant, stress-resistant, and contaminant-resistant resilient material that retains permanent elasticity even in harsh environments.
  • the first seal member 67 is mounted on the contact body 43 adjacent to the solid middle portion 61.
  • the first seal member 67 has a first axial side 71 facing the first conductor receiving end 51 of the contact body 43 and a second axial side 73 facing the second conductor receiving end 55 of the contact body 43.
  • the first seal member 67 includes a first plurality of axially spaced annular projections 79.
  • the first plurality of projections 79 axially extend such that when the contact 37 is pushed into the contact receiving passageway 18 from the first axial end 19 thereof, outer ends of the first plurality of projections 79 are bent towards the first conductor receiving end 51 of the contact body 43.
  • the second seal member 69 is mounted on the contact body 43 adjacent to the second conductor receiving end 55 and has a portion that axially extends beyond the second conductor receiving end 55 of the contact body 43.
  • the second seal member 69 has a first axial side 75 facing the first conductor receiving end 51 of the contact body 43 and a second axial side 77 facing the second conductor receiving end 55 of the contact body 43.
  • the second seal member 69 has a second plurality of axially spaced annular projections 81.
  • the second plurality of projections 81 axially extend such that when the contact 37 is pushed into the contact receiving passageway 18 from the first axial end 19 thereof, outer ends of the second plurality of projections 81 substantially contact the inner wall of the contact receiving passageway 18 but either remain straight or are bent less than the first plurality of projections 79.
  • first and second seal members 67, 69 are illustrated as each having three of each of the first and second annular projections 79, 81, the number of projections is not limited to three and may vary depending on the desired sealing effect for a particular application.
  • Figure 7 shows an alternate embodiment of the contact 37.
  • the contact 37 has a single seal member 83 made of the same material as the first and second seal members 67, 69.
  • the single seal member 81 has the first and second pluralities of annular projections 79, 81.
  • the first plurality of projections 79 is arranged to face the first conductor receiving end 51
  • the second plurality of projections 81 is arranged to face the second conductor receiving end 55.
  • the axial part of the single sealing member 83 having the second plurality of projections 81 extends beyond the second conductor receiving end 55 of the contact body 43.
  • the outer ends of the first plurality of projections 79 are bent towards the first conductor receiving end 51 of the contact body 43 and the outer ends of the second plurality of projections 81 substantially contact the inner wall of the contact receiving passageway 18 without being bent or by being bent less than the first plurality of projections 79.
  • the seal between the passageway 18 and the first plurality of projections is increased when engine oil pressing against the first plurality of projections 79 urges the bent outer ends of the first plurality of projections 79 against the inner wall of the passageway 18.
  • the axial region of the second plurality of projections 81 of the single seal member 83 is provided with a plurality of small projections 85 extending inwardly from an inner diameter of the single sealing member 83.
  • the small projections 85 contact an outer periphery of the second conductor 59 to prevent, for example, water from passing from the second axial side 17 between the second conductor 59 and the inner periphery of the single sealing member 83. Water, therefore, is blocked from passing by either the inner periphery or the outer periphery of the sealing member 83.
  • the single seal member 83 is illustrated as having three first annular projections 79 and two second and small annular projections 81, 85 the number of projections is not limited to these amounts and may vary depending on the desired sealing effect for a particular application.
  • the contact body 43 has a plurality of radially extending annular metal ribs 87 in a region where the single seal member 83 is seated.
  • the inner periphery of the single seal member 83 has a plurality of complementarily formed radially extending annular recesses 89 for receiving the metal ribs 87.
  • the ribs 87 and the recesses 89 thereby secure the single seal member 83 to the contact body 43.
  • the single seal member 83 may be placed on the contact body 43 by pressing it over the contact body 43 with a tool or by moulding or vulcanising the single seal member 81 onto the contact body 43.
  • the inner periphery of the second sealing member 69 of the embodiment of Figure 6 may also be formed with small projections 85 depending on the desired application.
  • the first seal member 67 and/or the second seal member 69 and the contact body 43 of the embodiment of Figure 6 may be formed with the ribs 87 and recesses 89, respectively, depending on the desired application.
  • a first plurality of the first conductors 57 extending from the first axial face 15 of the housing 13 are each arranged as twisted-pairs. Each of the twisted-pairs is terminated by a 2-position connector 93.
  • a second plurality of the first conductors 57 is arranged as straight pairs. Each of the two conductors of each of the straight pairs is terminated by a 1-position connector 95.
  • the 2-position connectors 93 make a plug connection to electromagnetic fuel injection valves (not shown), and the 1-position connectors 95 make a releasable connection to engine brake management components (not shown).
  • the first conductors 57 are arranged as flying leads and are heat-protected by means of heat-resistant tubing 97, which secures the cables and protects the cable insulation against wear.
  • the second conductors 59 extending from the second axial face 17 of the housing 13 are bent by 90 degrees and are bundled by the grommet opening 35.
  • the grommet 33 thereby prevents the cable having the second conductors 59 from axially twisting and further prevents insulation rubbing.
  • the second conductors 59 extend through a bellow 99 to a 12-position connector 101.
  • the free end of the bellow 99 is adapted to be mounted on a collar 103, which is pre-mounted on the connector 101.
  • the connector 101 has, for example, twelve contacts 102, by means of which the second conductors 59 may be connected to a motor management system (not shown).
  • a tube (not shown) extends between the second axial face 17 of the housing 13 and the grommet 33.
  • the tube (not shown) has a 90 degree bend and accommodates parts of the second conductors 59 extending between the second axial face 17 of the housing 13 and the grommet 33.
  • the tube (not shown) is snapped into and secured by the annular recess 105 of the housing 13.
  • the first conductor 57 is inserted into the tubular first conductor engaging portions 49 and is crimped therein.
  • the contacts of the connectors 93, 95 are crimped on the free ends of the first conductors 57.
  • the first seal member 67 is mounted on the contact body 43.
  • the second conductor 59 is inserted into the tubular second conductor engaging portions 53 and crimped therein.
  • the second seal member 39 is mounted on the contact body 43.
  • the second conductor 59 with the second seal member 69 mounted thereon and the contact 37 connected to the second conductors 59 is then slid into the respective contact receiving passageway 18 of the housing 13 (twisted pair by twisted pair in the case of the embodiment shown in Figure 5 where each of the connectors 93, 95 terminates two of the first conductors 57).
  • the bevels 109 formed on the housing 13 and the entrance bevels 107 formed on each of the collars 63, 65 facilitate entry of the contact 37 into the respective contact receiving passageway 18.
  • the second conductor 59 is then fed through the grommet opening 35 and the contacts 102 are crimped to the free end of the second conductor 59.
  • the contacts 102 are led through the bellows 99 and are inserted into the housing of the connector 101 with the pre-mounted collar 103.
  • the resulting harness is now mounted on the cylinder head wall 26 by inserting the housing 13 of the harness into the housing receiving passageway 25 of the cylinder head wall 26. Because the first and second conductors 57, 59 are directly connected to the contact 37, there is no plug connection in the region of the cylinder head wall 26. Thus, a stable connection is provided that has a high resistance to vibrations and mechanical forces applied to the first and second conductors 57, 59.
  • the contact receiving passageways 18 could also be formed in the cylinder head wall 26 itself.
  • the cylinder head wall 26 is made of an electrically insulating material, such as, ceramic or plastic, or if the cylinder head wall 26 is made of an electrically conducting material, such as, steel, and the inner wall of each of the contact receiving passageways 18 is coated with an electrically insulating material.
  • This arrangement allows a rather large number of contacts 37 to be arranged in a limited space. This arrangement, however, can not be used when both ends of the harness comprising the contact 37 already have connectors 93, 95 attached thereto that can not be passed through the contact receiving passageway 18 formed in the cylinder head wall 26.
  • the cylinder head wall 26 is removed from the cylinder head while the contacts 37 crimped to the respective first conductors 57 are pushed into the respective contact receiving passageway of either the cylinder head wall 26 or the housing 13, which is already fixed in the housing receiving passageway 25 of the cylinder head wall 26.
  • the first axial ends 51 of the contact body 43 may additionally be fixed by potting 82 instead of or in addition to press-fitting the collars 63, 65 into the contact receiving holes 18. Fixing the contact 37 with the potting 82 is advantageous in that the contact 37 and the cable comprising the first conductors 57 are fixed and movements thereof are damped.
  • the potting 82 additionally protects against high temperature and blocks oil from entering into the cable and flowing back to the connectors 93, 95.
  • Suitable materials for the contact body include CuSn x and CuZn xx.
  • Suitable materials for the first, second, and single seal members 67, 69, 83 include VMQ and FVMQ.
  • Suitable materials for the housing include PA66 and reinforced PBT.

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Claims (17)

  1. Contact électrique (37), formé de sorte à être reçu dans un passage de réception du contact pratiquement cylindrique (18), le passage de réception du contact (18) ayant un diamètre intérieur (47), une première extrémité axiale (19) et une deuxième extrémité axiale (20), le contact (37) comprenant :
    un corps de contact pratiquement cylindrique (43) avec un diamètre extérieur (45), inférieur au diamètre intérieur (47) du passage de réception du contact (18), le corps du contact (43) comportant une partie d'engagement d'un premier conducteur (49) au niveau d'une extrémité de réception d'un premier conducteur (51), et partie d'engagement d'un deuxième conducteur (53), au niveau d'une extrémité de réception d'un deuxième conducteur (55), la partie d'engagement du premier conducteur (49) étant conçue pour établir une connexion électrique avec un premier conducteur (57) et la partie d'engagement d'un deuxième conducteur (53) étant conçue pour établir une connexion électrique avec un deuxième conducteur (59) ; et
    au moins un élément d'étanchéité (67, 83), monté sur le corps du contact (43), le au moins un élément d'étanchéité (67, 83) comportant un premier côté axial (71) faisant face à l'extrémité de réception du premier conducteur (51) du corps du contact (43), et un deuxième côté axial (73), faisant face à l'extrémité de réception du deuxième conducteur (55) du corps de contact (43), l'élément d'étanchéité (67, 83) comprenant une première pluralité de saillies annulaires à espacement axial (7), s'étendant à partir de lui et formées de sorte que les extrémités radiales externes de la première pluralité de saillies (79) sont fléchies vers la première extrémité axiale (19) lorsque le contact (37) est poussé dans le passage de réception du contact (18) à partir de la première extrémité axiale (19) du passage de réception du contact (18) ;
    caractérisé en ce que
    le au moins un élément d'étanchéité (83) comprend une deuxième pluralité de saillies annulaires à espacement axial (81) sur un côté de la première pluralité de saillies (79), orientée à l'écart de l'extrémité de réception du premier conducteur (51) du corps du contact (43), la deuxième pluralité de saillies (81) s'étendant de sorte que lorsque le contact (37) est poussé dans le passage de réception du contact (18), les extrémités radiales externes de la deuxième pluralité de saillies (81) contactent la paroi interne du passage de réception du contact (18), sans être fléchies ou sans être fléchies vers la première extrémité axiale (19) sur une distance inférieure à celle de la première pluralité de saillies (79) ; ou
    en ce que le contact électrique (37) comporte un deuxième élément d'étanchéité (69), positionné sur le côté du au moins un élément d'étanchéité (67) orienté à l'écart de l'extrémité de réception du premier conducteur (51) du corps du contact (43), le deuxième élément d'étanchéité (69) comprenant une deuxième pluralité de saillies annulaires à espacement axial (81), s'étendant à l'écart du corps du contact (43), de sorte que lorsque le contact (37) est poussé dans le passage de réception du contact (18), les extrémités radiales externes de la deuxième pluralité de saillies (81) contactent la paroi interne du passage de réception du contact (18), sans être fléchies ou sans être fléchies vers la première extrémité axiale (19) sur une distance inférieure à celle de la première pluralité de saillies (79).
  2. Contact selon la revendication 1, dans lequel les extrémités radiales externes d'au moins la première pluralité de saillies (79) sont fléchies d'avance vers la première extrémité axiale (19) dans un état détendu.
  3. Contact selon la revendication 1, dans lequel les extrémités radiales externes d'au moins la deuxième pluralité de saillies (81) sont droites dans un état détendu.
  4. Contact selon l'une quelconque des revendications 1 à 3, dans lequel le au moins un élément d'étanchéité (67, 69, 83) est ajusté par pression sur le corps du contact (43).
  5. Contact selon l'une quelconque des revendications 1 à 3, dans lequel le au moins un élément d'étanchéité (67, 69, 83) est vulcanisé sur le corps du contact (43).
  6. Contact selon l'une quelconque des revendications 1 à 5, dans lequel au moins une des parties d'engagement du conducteur (49, 53) englobe une section de sertissage pour établir une connexion par sertissage avec le conducteur respectif (57, 59).
  7. Contact selon l'une quelconque des revendications 1 à 6, dans lequel le corps du contact (43) comporte une partie centrale solide (61), une première partie de tube (49), s'étendant entre l'extrémité de réception du premier conducteur (51) du corps du contact (43) et la partie centrale solide (61), pour recevoir le premier conducteur (57), et une deuxième partie de tube (53), s'étendant entre l'extrémité de réception du deuxième conducteur (55) du corps du contact (43) et la partie centrale solide (61), pour recevoir le deuxième conducteur (59).
  8. Connecteur électrique, comprenant :
    un boîtier isolé (13), comportant au moins un passage de réception du contact pratiquement cylindrique (18) ayant un diamètre intérieur prédéterminé (47), s'étendant entre une première face axiale (15) et une deuxième face axiale (17) du boîtier (13) ; et
    un contact (37) selon la revendication 1, agencé dans le passage de réception du contact ( 18).
  9. Connecteur électrique selon la revendication 8, dans lequel le au moins un élément d'étanchéité (83) comprend une deuxième pluralité de saillies annulaires à espacement axial (81) sur un côté de la première pluralité de saillies (79), orientée à l'écart de l'extrémité de réception du premier conducteur (51) du corps du contact (43), la deuxième pluralité de saillies (81) s'étendant de sorte que la deuxième pluralité de saillies (81) contactent la paroi interne du passage de réception du contact (18) sans être fléchies ou sans être fléchies vers la première extrémité axiale (19) sur une distance inférieure à celle de la première pluralité de saillies (79).
  10. Connecteur électrique selon la revendication 8, comportant un deuxième élément d'étanchéité (69), comportant une deuxième pluralité de saillies annulaires à espacement axial (81), positionné sur un côté du au moins un élément d'étanchéité (67) orienté à l'écart de l'extrémité de réception du premier conducteur (51) du corps du contact (43), la deuxième pluralité de saillies (81) s'étendant de sorte que les extrémités radiales externes de la deuxième pluralité de saillies (81) contactent la paroi interne du passage de réception du contact (18), sans être fléchies ou sans être fléchies vers la première extrémité axiale (19) sur une distance inférieure à celle de la première pluralité de saillies (79).
  11. Connecteur électrique selon l'une quelconque des revendications 8 à 10, dans lequel le corps du contact (43) comporte une partie médiane solide (61), une première partie de tube (49) s'étendant entre l'extrémité de réception du premier conducteur (61) du corps du contact (43) et la partie médiane solide (61), pour recevoir le premier conducteur (57), et une deuxième partie de tube (53), s'étendant entre l'extrémité de réception du deuxième conducteur (55) du corps du contact (43) et la partie médiane solide (61), pour recevoir le deuxième conducteur (59).
  12. Connecteur électrique selon l'une quelconque des revendications 8 à 11, comprenant un contact électrique (37) selon l'une quelconque des revendications 6 à 8.
  13. Connecteur électrique selon l'une quelconque des revendications 8 à 12, dans lequel le boîtier (13) comporte une surface périphérique externe pratiquement cylindrique comportant un élément d'étanchéité périphérique externe (23).
  14. Connecteur électrique selon l'une quelconque des revendications 8 à 13, dans lequel l'extrémité de réception du deuxième conducteur (55) du au moins un contact (37) est ajustée par pression dans le passage de réception de contact (18).
  15. Connecteur électrique selon l'une quelconque des revendications 8 à 13, dans lequel le au moins un contact (37) est fixé dans le boîtier (13) par enrobage (82).
  16. Utilisation du contact électrique (37) selon l'une quelconque des revendications 1 à 7, pour connecter électriquement un premier conducteur (57), sur un côté interne (27) d'une paroi de culasse (26) d'un moteur à combustion, à un deuxième conducteur (59), sur un côté externe (28) de la paroi de culasse (26), le passage de réception du contact (18) formant un canal à travers la paroi de culasse (26), la première extrémité axiale (19) du passage de réception du contact (18) étant adjacente au côté interne (27) de la paroi de culasse (26), et la deuxième extrémité axiale (20) du passage de réception du contact (18) étant adjacente au côté externe (28) de la paroi de culasse (26), et le au moins un élément d'étanchéité (67, 69, 83) étant monté sur le contact (37), de sorte à empêcher le passage de l'huile sous pression sur le côté interne (27) de la paroi de culasse (26) à travers le passage de réception du contact (18), vers le côté externe (28) de la paroi de culasse (26).
  17. Utilisation du connecteur électrique (11) selon l'une quelconque des revendications 8 à 15 pour connecter électriquement un premier conducteur (57), sur un côté interne (27) d'une paroi de culasse (26) d'un moteur à combustion, à un deuxième conducteur (59), sur un côté externe (28) de la paroi de culasse (26), le boîtier (13) du connecteur électrique (11) étant reçu dans un passage (25) de la paroi de culasse (26), la première face axiale (15) du boîtier (13) étant adjacente au côté interne (27) de la paroi de culasse (26), et la deuxième face axiale (17) du boîtier (13) étant adjacente au côté externe (28) de la paroi de culasse (26), le au moins un élément d'étanchéité (67, 69, 83) étant monté sur le au moins un contact (37) reçu dans au moins un passage de réception du contact (18) du boîtier (13), de sorte à empêcher le passage de l'huile sous pression sur le côté interne (27) de la paroi de culasse (26) à travers le passage de réception du contact (18) vers le côté externe (28) de la paroi de culasse (26).
EP20040014506 2003-06-25 2004-06-21 Contact electrique avec joint d' étancheité Expired - Lifetime EP1492202B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20040014506 EP1492202B1 (fr) 2003-06-25 2004-06-21 Contact electrique avec joint d' étancheité

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03014296 2003-06-25
EP03014296 2003-06-25
EP20040014506 EP1492202B1 (fr) 2003-06-25 2004-06-21 Contact electrique avec joint d' étancheité

Publications (2)

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EP1492202A1 EP1492202A1 (fr) 2004-12-29
EP1492202B1 true EP1492202B1 (fr) 2012-08-08

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EP (1) EP1492202B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010025096B3 (de) * 2010-06-25 2012-01-05 Reinz-Dichtungs-Gmbh Dichtrahmen mit längsöldichter Stromdurchführung mittels Elastomerumspritzung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2516280A1 (de) * 1975-04-14 1976-10-28 Bunker Ramo Elektrische steckverbindung
US5564947A (en) * 1994-01-26 1996-10-15 Methode Electronics, Inc. Molded sealed metallic receptacle
DE4430775A1 (de) * 1994-08-30 1996-03-07 Grote & Hartmann Dichtungsvorrichtung für mehrpolige elektrische Steckverbinder

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