WO1998035405A1 - Seal for sealing an electrical conductor in an entry opening, and a method for producing a seal - Google Patents

Seal for sealing an electrical conductor in an entry opening, and a method for producing a seal Download PDF

Info

Publication number
WO1998035405A1
WO1998035405A1 PCT/IB1998/000107 IB9800107W WO9835405A1 WO 1998035405 A1 WO1998035405 A1 WO 1998035405A1 IB 9800107 W IB9800107 W IB 9800107W WO 9835405 A1 WO9835405 A1 WO 9835405A1
Authority
WO
WIPO (PCT)
Prior art keywords
seal
region
metal strip
coated
conductor
Prior art date
Application number
PCT/IB1998/000107
Other languages
French (fr)
Inventor
Ludovicus Cornelis Van Der Sanden
Original Assignee
The Whitaker Corporation
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 The Whitaker Corporation filed Critical The Whitaker Corporation
Priority to AU55724/98A priority Critical patent/AU5572498A/en
Publication of WO1998035405A1 publication Critical patent/WO1998035405A1/en

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
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/005—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for making dustproof, splashproof, drip-proof, waterproof, or flameproof connection, coupling, or casing

Definitions

  • the invention relates to a seal for sealing an electrical conductor in an entry opening, in particular an electrical conductor in a plug housing.
  • the invention also relates to a method for producing such a seal.
  • each individual contact for example each individual conductor
  • a common seal can be used.
  • the incorporation of a common seal has a considerable advantage, particularly when the plug in question has a very large number of contacts which are very tightly packed.
  • Individual sealing systems have the disadvantage that the seal must first be pushed over the conductor and the contact must then be crimped onto the conductor, the seal often being fixed during this crimping process.
  • the object of the invention is to specify a seal for sealing an electrical conductor in an entry opening, which seal can be fitted to the conductor with little effort and achieves a good sealing effect.
  • a seal comprising a metal strip that is coated at least in some places with sealing material, and that can be pressed around the electrical conductor for fixing.
  • a further object of the invention is to specify a method for producing such a seal .
  • the object is achieved by a method with the steps of stamping a metal strip and coating it with a sealing material.
  • Advantageous developments are also specified in the dependent claims .
  • a seal according to the invention has the advantages that it can be produced particularly easily and can be fitted to an electrical conductor in a particularly simple manner by being crimped onto it. This is possible since the seal comprises a metal strip which is coated with a sealing material at least in some places. In order to ensure that the seal is fixed well on the electrical conductor, for example a braided conductor having an insulation sleeve, it is expedient for the metal strip to have uncoated regions and coated regions in the longitudinal direction. The uncoated regions then ensure mechanical retention on the electrical conductor, by virtue of the pressing process.
  • a seal according to the invention is particularly advantageous for a seal according to the invention to be part of a contact which has, for example, a contact-making region for making contact with a complementary contact, and a conductor connecting region for connection to an electrical conductor. Since, in most cases, the conductor connecting region has a so-called insulation crimp, this insulation crimp can be replaced by the seal described above.
  • the seal is thus also mechanically fitted, in the same operation as the conductor connecting region onto the electrical conductor e.g. by crimping. In comparison with other individual sealing systems, the process of fitting the seal is thus avoided.
  • the stamping and bending process is followed by a coating process.
  • the metal strip for the insulation crimp can for this purpose be spray-coated, for example, with a sealing material, such as an elastomer.
  • a sealing material such as an elastomer.
  • Figure 1 shows an electrical contact having a metal strip for a seal according to the invention, before being coated with the sealing material;
  • Figure 2 shows two corresponding contacts, after being coated with the sealing material;
  • Figure 3 shows a corresponding contact with a complete seal.
  • Figure 1 illustrates an electrical contact 1 having a contact-making region 2 and a conductor connecting region 3.
  • the contact illustrated in Figure 1 is a fork contact. However, this is only an illustration by way of example and the type of contact used with this seal is irrelevant.
  • the conductor connecting region 3 comprises, on the one hand, a region 4 for producing the electrical contact and, on the other hand, a region 5, the so-called insulation crimp.
  • the region 4 for making electrical contact may be designed either as a crimped region or else as an insulation piercing/clamping region.
  • the region 5 corresponds to a seal according to the invention.
  • Figure 1 illustrates a metal strip 6 which has holes 7 or another kind of perforation in a central region. Furthermore, viewed in the longitudinal direction, the metal strip 6 has regions 8 and 9 at the top and bottom without holes. While the region 10 with the holes is bounded at the sides, the regions 8 and 9 merge into narrower strips 11 and 12. These narrower strips connect the metal of the stamped contact to the closest adjacent contact. In addition, a region 13 is provided, by means of which the contact is connected to a transport strip 14.
  • the transport strip 14, on which two contacts 1 are mounted can also be seen in Figure 2.
  • the metal strip 6 is already coated with a sealing material 15.
  • the sealing material 15 is, for example, an elastomer.
  • the sealing material 15 is illustrated in Figure 2 by stippled areas.
  • the coating is applied in the same way on both sides of the metal strip. It can clearly be seen that the metal strip is not coated completely.
  • a coating is applied in the region 10, in which the holes are provided. The holes are used to connect the two coatings on the front and rear of the metal strip 6 to one another.
  • a coating is also applied in the region 16 in which the opening between the two narrow metal strips 12 and 11 is located.
  • the regions 8 and 9 as well as the narrow metal strips 11 and 12 are not coated with the elastomer.
  • the coating can be applied, for example, by spray coating or extrusion.
  • the contact with the seal completely cut out is now illustrated in Figure 3.
  • the sealing material 15 is likewise represented by stippled areas. It can be seen that only the central region 10 is surrounded by sealing material. In contrast, the regions 8 and 9 are not coated. It can furthermore be seen that short lugs 11' and 12' have been left projecting from the metal strips 11 and 12. In addition, the seal has been cut off in the central region in such a manner that the sealing material projects somewhat beyond the metal on both sides, as a result of which the metal is also surrounded by polymer at the edges. The lugs 11' and 12' are used to achieve good retention on the conductor insulation while the seal is being pressed.
  • the central region 10, which is coated with the polymer 15, represents the actual seal.

Landscapes

  • Manufacturing Of Electrical Connectors (AREA)

Abstract

A seal for sealing an electrical conductor in an entry opening is specified, which can be used in particular for sealing an electrical conductor in a plug housing, the seal including a metal strip (6) which is coated with a sealing material (15) at least in some places, when the seal can be pressed around the electrical conductor, the seal being part of an electrical contact (1) having a contact-making region (2) and having a conductor connecting region (3), the conductor connecting region having a region (4) for making electrical contact and a region with the seal which surrounds the insulation of the conductor.

Description

SEAL FOR SEALING AN ELECTRICAL CONDUCTOR IN AN ENTRY OPENING, AND A METHOD FOR PRODUCING A SEAL
The invention relates to a seal for sealing an electrical conductor in an entry opening, in particular an electrical conductor in a plug housing. The invention also relates to a method for producing such a seal.
For many applications, it is necessary to seal electrical conductors in plug housings. It is intended to address two different methods here for this purpose. Each individual contact, for example each individual conductor, can be sealed against the plug housing, or a common seal can be used. The incorporation of a common seal has a considerable advantage, particularly when the plug in question has a very large number of contacts which are very tightly packed. Individual sealing systems have the disadvantage that the seal must first be pushed over the conductor and the contact must then be crimped onto the conductor, the seal often being fixed during this crimping process.
From DE 40 02 828 C2, it is in principle known for contacts with insulated contact sleeves to be produced. A method is known for producing tubular contacts from flat blanks. In this method, the connecting part is provided with an insulation film. The insulation film may be either bonded or welded.
The object of the invention is to specify a seal for sealing an electrical conductor in an entry opening, which seal can be fitted to the conductor with little effort and achieves a good sealing effect.
The object is achieved by a seal comprising a metal strip that is coated at least in some places with sealing material, and that can be pressed around the electrical conductor for fixing. Advantageous developments are specified in the dependent claims.
A further object of the invention is to specify a method for producing such a seal . The object is achieved by a method with the steps of stamping a metal strip and coating it with a sealing material. Advantageous developments are also specified in the dependent claims .
A seal according to the invention has the advantages that it can be produced particularly easily and can be fitted to an electrical conductor in a particularly simple manner by being crimped onto it. This is possible since the seal comprises a metal strip which is coated with a sealing material at least in some places. In order to ensure that the seal is fixed well on the electrical conductor, for example a braided conductor having an insulation sleeve, it is expedient for the metal strip to have uncoated regions and coated regions in the longitudinal direction. The uncoated regions then ensure mechanical retention on the electrical conductor, by virtue of the pressing process.
It is particularly advantageous for a seal according to the invention to be part of a contact which has, for example, a contact-making region for making contact with a complementary contact, and a conductor connecting region for connection to an electrical conductor. Since, in most cases, the conductor connecting region has a so-called insulation crimp, this insulation crimp can be replaced by the seal described above. The seal is thus also mechanically fitted, in the same operation as the conductor connecting region onto the electrical conductor e.g. by crimping. In comparison with other individual sealing systems, the process of fitting the seal is thus avoided. During the production of a corresponding electrical contact, the stamping and bending process is followed by a coating process. The metal strip for the insulation crimp can for this purpose be spray-coated, for example, with a sealing material, such as an elastomer. Such a process can follow the stamping and bending process of the contact fully automatically and thus does not represent any significant additional complexity. After this, the contacts have to be cut off the corresponding endless strip and a base strip. It is possible for contacts to be provided on both sides of the base strip, and this can have an advantageous effect during production.
In order to ensure that the coating on both sides of the metal strip also adheres to it reliably, it is expedient to provide holes or perforations in the corresponding coated region of the metal strip, through which holes or perforations the two sealing material layers can be connected to one another. In order to obtain a reliable seal, it is advantageous for the edges of the metal strip also to be surrounded by sealing material in the coated region. An exemplary embodiment of the invention will be described with reference to the figures, in which:
Figure 1 shows an electrical contact having a metal strip for a seal according to the invention, before being coated with the sealing material; Figure 2 shows two corresponding contacts, after being coated with the sealing material; and
Figure 3 shows a corresponding contact with a complete seal.
Figure 1 illustrates an electrical contact 1 having a contact-making region 2 and a conductor connecting region 3. The contact illustrated in Figure 1 is a fork contact. However, this is only an illustration by way of example and the type of contact used with this seal is irrelevant. The conductor connecting region 3 comprises, on the one hand, a region 4 for producing the electrical contact and, on the other hand, a region 5, the so-called insulation crimp. The region 4 for making electrical contact may be designed either as a crimped region or else as an insulation piercing/clamping region.
The region 5 corresponds to a seal according to the invention. Figure 1 illustrates a metal strip 6 which has holes 7 or another kind of perforation in a central region. Furthermore, viewed in the longitudinal direction, the metal strip 6 has regions 8 and 9 at the top and bottom without holes. While the region 10 with the holes is bounded at the sides, the regions 8 and 9 merge into narrower strips 11 and 12. These narrower strips connect the metal of the stamped contact to the closest adjacent contact. In addition, a region 13 is provided, by means of which the contact is connected to a transport strip 14.
The transport strip 14, on which two contacts 1 are mounted, can also be seen in Figure 2. In Figure 2, the metal strip 6 is already coated with a sealing material 15. The sealing material 15 is, for example, an elastomer. The sealing material 15 is illustrated in Figure 2 by stippled areas. The coating is applied in the same way on both sides of the metal strip. It can clearly be seen that the metal strip is not coated completely. A coating is applied in the region 10, in which the holes are provided. The holes are used to connect the two coatings on the front and rear of the metal strip 6 to one another. In addition, a coating is also applied in the region 16 in which the opening between the two narrow metal strips 12 and 11 is located. The regions 8 and 9 as well as the narrow metal strips 11 and 12 are not coated with the elastomer. The coating can be applied, for example, by spray coating or extrusion.
The contact with the seal completely cut out is now illustrated in Figure 3. The sealing material 15 is likewise represented by stippled areas. It can be seen that only the central region 10 is surrounded by sealing material. In contrast, the regions 8 and 9 are not coated. It can furthermore be seen that short lugs 11' and 12' have been left projecting from the metal strips 11 and 12. In addition, the seal has been cut off in the central region in such a manner that the sealing material projects somewhat beyond the metal on both sides, as a result of which the metal is also surrounded by polymer at the edges. The lugs 11' and 12' are used to achieve good retention on the conductor insulation while the seal is being pressed. The central region 10, which is coated with the polymer 15, represents the actual seal.

Claims

1. A seal for sealing an electrical conductor in an entry opening, in particular for sealing an electrical conductor in a plug housing, the seal comprising a metal strip (6) that is coated at least in some places with sealing material (15) , and that can be pressed around the electrical conductor for fixing.
2. The seal according to Claim 1, characterized in that, in the longitudinal direction of the conductor, a coated region is adjacent to an uncoated region of the metal strip (6) .
3. A seal for sealing an electrical conductor in an entry opening, in particular in a chamber of a connector housing, the seal comprising a metal strip (6) with first regions (10) that are coated with a sealing material (15) and second regions (8) for mechanical fixing of the seal to the electrical conductor.
4. The seal according to one of Claims 1, 2 or 3, characterized in that the metal strip (6) is coated on both sides in at least some places.
5. The seal according to Claim 4, characterized in that the metal strip (6) has holes (7) in the region that is coated on both sides.
6. The seal according to one of Claims 1 to 5, characterized in that a central region (10) of the seal in the longitudinal direction is coated with sealing material (15) on both sides, while the front and rear regions (8, 9) are uncoated and are used for mechanical fixing of the seal.
7. Seal according to Claim 6, characterized in that, in the central region (10), the edges of the metal strip (6) are also surrounded by sealing material.
8. Seal according to one of Claims 6 or 7, characterized in that the metal strip (6) is broader in the uncoated region (8, 9) than in the coated region (10) .
9. Seal according to one of Claims 1 to 8, characterized in that the seal is part of an electrical contact (1) having a contact-making region (2) and having a conductor connecting region (3) .
10. Seal according to Claim 9, characterized in that the conductor connecting region (3) comprises a region (4) for making electrical contact and a region with the seal that surrounds the conductor insulation.
11. Method for producing a seal according to one of Claims 1 to 9, characterized in that a metal strip is produced by stamping and is then coated with a sealing material (15) .
12. Method according to Claim 11, characterized in that the metal strip is produced as an endless strip and is cut after coating.
PCT/IB1998/000107 1997-02-07 1998-01-28 Seal for sealing an electrical conductor in an entry opening, and a method for producing a seal WO1998035405A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU55724/98A AU5572498A (en) 1997-12-07 1998-01-28 Seal for sealing an electrical conductor in an entry opening, and a method for producing a seal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP97101973.2 1997-02-07
EP97101973 1997-12-07

Publications (1)

Publication Number Publication Date
WO1998035405A1 true WO1998035405A1 (en) 1998-08-13

Family

ID=8226447

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1998/000107 WO1998035405A1 (en) 1997-02-07 1998-01-28 Seal for sealing an electrical conductor in an entry opening, and a method for producing a seal

Country Status (2)

Country Link
AU (1) AU5572498A (en)
WO (1) WO1998035405A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3113287B1 (en) * 2015-06-29 2020-07-29 Tyco Electronics France SAS Method of manufacturing a connection assembly

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0353810A2 (en) * 1988-08-01 1990-02-07 C.A. WEIDMÜLLER GMBH & CO. Process for producing contact pieces from strip material, contact pieces produced according to the process and strip material for producing contact pieces
DE4002828A1 (en) * 1990-01-31 1991-08-01 Weidmueller C A Gmbh Co METHOD FOR PRODUCING CONTACT ORGANS PROVIDED WITH AN INSULATED CONNECTING PART, AND CONTACT ORGANS MANUFACTURED BY THE METHOD

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0353810A2 (en) * 1988-08-01 1990-02-07 C.A. WEIDMÜLLER GMBH & CO. Process for producing contact pieces from strip material, contact pieces produced according to the process and strip material for producing contact pieces
DE4002828A1 (en) * 1990-01-31 1991-08-01 Weidmueller C A Gmbh Co METHOD FOR PRODUCING CONTACT ORGANS PROVIDED WITH AN INSULATED CONNECTING PART, AND CONTACT ORGANS MANUFACTURED BY THE METHOD

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3113287B1 (en) * 2015-06-29 2020-07-29 Tyco Electronics France SAS Method of manufacturing a connection assembly

Also Published As

Publication number Publication date
AU5572498A (en) 1998-08-26

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