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
  • 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
  • H01R4/58—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 characterised by the form or material of the contacting members
  • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
  • H01R4/646—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail for cables or flexible cylindrical bodies
• • 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
  • H01R4/70—Insulation of connections

Definitions

• the invention relates to a device for electrically contacting an electrically conductive part of an outer surface of a pipe, a cable or the like, in particular an outer conductor of a coaxial cable which is stripped in sections.
• a device of the type in question is known from EP 0 744 788 AI. It has a base body in contact with the body to be contacted in the assembly position, which body consists of a metallic clamp band which is coated with an elastic material which is formed by rubber.
• the present invention has for its object to provide a device of the type mentioned in the preamble of claim 1, which is resistant 15 and has favorable mechanical properties.
• the elastic material contains at least one at least partially vulcanized ethylene-propylene rubber.
• the use of such an ethylene-propylene rubber surprisingly gives the device according to the invention special advantageous mechanical properties.
• the elastic material of the base body is particularly resistant to ozone, weathering and chemical influences.
• the elastic material of the base body has excellent electrical insulation properties through the use of an ethylene-propylene rubber.
• the compression set, temperature resistance and flexibility at low temperatures can be selected within wide limits depending on the formulation and the polymer composition or polymer mixture.
• the degree of vulcanization of the ethylene-propylene rubber can vary according to the respective requirements.
• the elastic material of the base body can contain a single ethylene-propylene rubber. However, it can also contain several ethylene-propylene rubbers.
• the elastic material of the base body contains a mixture (blend) of at least one ethylene-propylene rubber with at least one thermoplastic elastomer (TTE).
• Thermoplastic elastomers have properties similar to plastics and are easy to process.
• the base body insofar as it consists of the elastic material, can be produced in a spraying process when thermoplastic elastomers are used.
• the ethylene-propylene rubber is EPDM.
• the basic body of the device according to the invention can in principle be essentially rigid.
• An expedient development provides, however, that the base body is designed to be flexible.
• the base body adapts to the surface of the body to be contacted due to its flexibility. This enables contacting even very uneven or curved bodies.
• Another further training provides that the
• Base body is designed such that it preferably encompasses the body to be contacted in a ring or sleeve shape in the mounting position. For example, when contacting pipes or cables, the base body is securely held on the body to be contacted in this way.
• the base body is designed as a clamp that can be tensioned around the body to be contacted.
• the assembly of the device according to the invention is simplified.
• the base body of the device according to the invention can be constructed in several parts, for example for contacting a pipe or a cable by means of several parts which are successive, for example semi-ring-shaped, in the circumferential direction in the assembly position.
• the base body is formed in one piece and has angled or bent tabs at its free ends, which can be connected to one another in the assembly position, preferably by means of a screwing device or a clamping device. Due to the one-piece design of the base body, the assembly of the device according to the invention is further simplified in this embodiment. Through sales Binding the tabs together, the device can be fastened to the body to be contacted in a quick and simple manner.
• the device has sealing means for sealing a space formed in the assembly position between the body to be contacted and the base body against the ingress of air and / or moisture. In this way it is prevented, for example, that moisture penetrates into a contact area in which the device contacts the electrically conductive part of the body to be contacted.
• the sealing means in the axial direction of the base body are spaced from each other, extending in the circumferential direction of the base body, sealing lips made of elastic material, which on a side of the base body facing the body to be contacted in the assembly position are arranged and, in the mounting position, lie sealingly on the outer surface of the body to be contacted.
• the elastic material of the sealing lips expediently contains at least one thermoplastic elastomer and / or at least one at least partially vulcanized ethylene-propylene rubber, in particular EPDM.
• Embodiment provides that the sealing lips consist of the same elastic material as the base body, in particular are formed in one piece with the elastic material of the base body. To this The way of producing the device according to the invention is further simplified.
• the elastic material of the base body has at least one of the following material properties: the Shore hardness (A) is approximately 35-85, preferably approximately 47-70, in particular approximately 64 (DIN 53505-A), the tensile strength is more than approximately 6 MPa (DIN 53540), the elongation at break is more than about 300% (DIN 53504), the elastic material is ozone-resistant and / or UV-resistant and / or oil-resistant and / or weather-resistant.
• the base body can consist entirely of elastic material.
• the base body has a carrier element to which the elastic material is connected. In this way, the stability of the device according to the invention is increased.
• the carrier element is essentially band-shaped and preferably extends in the longitudinal direction or in the circumferential direction of the base body over its entire length and preferably forms the tabs.
• This embodiment is particularly simple in construction and therefore inexpensive to manufacture.
• this preferably consists of metal, in particular brass and / or special brass and / or low-alloy copper and / or chromium-nickel alloy steel. These materials have particularly good electrical conductivity.
• the contact means expediently have a contact element which is arranged on a side of the base body facing the body to be contacted in the assembly position and is connected to the latter.
• the contact element consists of metal, preferably is formed by a flat strand, a flat band or a metal braid band.
• Such contact elements are inexpensive.
• the contact element is expediently connected to the carrier element. If the carrier element is made of metal, then by establishing an electrically conductive connection between a conductor, for example a grounding cable, and the carrier element, which can be accessible from the outside in the mounting position, an electrical connection is made via the contact element which is in contact with the body to be contacted conductive connection to this can be established.
• the base body has at least one contact protrusion made of electrically conductive material which, in the assembly position, bears against the electrically conductive part of the body to be contacted and thus forms the contact means.
• a separate contact element is not required, so that the structure of the device according to the invention is further simplified.
• the or each contact projection is expediently formed on the carrier element. If this consists of sheet metal, for example, the contact projections can be formed by beads or arches pressed into the sheet metal.
• FIG. 1 is a schematic perspective view of a first embodiment of the device according to the invention
• FIG. 2 shows, on an enlarged scale, an axial section through part of a cable that is electrically contacted with the device according to FIG. 1, FIG.
• FIG. 3 shows a schematic perspective view of the cable contacted with the device according to FIG. 1,
• FIG. 5 shows a schematic view of the radial inner surface of the device according to FIG. 1
• FIG. 6 shows a schematic radial section through the device according to FIG. 4 in the assembly position
• FIG. 7 shows a schematic perspective view of a third exemplary embodiment of a device according to the invention.
• FIG. 8 shows, in a representation similar to FIG. 7, a fourth exemplary embodiment of a device according to the invention
• FIG. 9 shows the device according to FIG. 8 in the same representation as FIG. 7, an end part being connected to a tab
• FIG. 1 shows a first exemplary embodiment of a device according to the invention in the form of a device 2 for electrically conductive contacting of a stripped outer conductor of a coaxial cable.
• the device 2 has a flexible base body 4 made of elastic material, in which a band-shaped carrier element 6 made of metal is embedded.
• the elastic material consists of at least one at least partially vulcanized ethylene-propylene rubber, preferably EPDM, or of a blend (blend) of at least one ethylene-propylene rubber, preferably EPDM, with at least one thermoplastic elastomer (TPE).
• EPDM at least partially vulcanized ethylene-propylene rubber
• TPE thermoplastic elastomer
• the elastic material has the following material properties: -
• the Shore hardness (A) is approximately 64 (DIN
• the compression set is less than about 25% (DIN 53517, temperature 70 ° C, duration 48 hours), - the tensile strength is more than about 6 MPa
• the elongation at break is more than about 300% (DIN 53504), the cold standard is less than about - 40 ° C, especially about -50 ° C (DIN 53445-B), the change in hardness after aging is not higher than about ⁇ 3 (DIN 53508, DIN 53505-A), the change in tensile strength after aging is not greater than about ⁇ 15% (DIN 53508, DIN 53504), the change in elongation at break after aging is not greater than about ⁇ 20% (DIN 53508, DIN 53504), - the elastic material is largely ozone-resistant, UV-resistant and oil-resistant.
• the base body 4 has angled tabs 8, 10 at its ends, the support element 6 extending in the circumferential direction of the base body 4 into the area of the tabs. In the tab 8 are
• Through bores are formed, through which screws (not shown in FIG. 1) extend in the mounting position of the device 2 and are screwed into threaded bores 14 formed in the tab 10 in such a way that the tabs 8, 10 can be clamped together by tightening the screws, whereby the base body 4 of the device 2 encloses the body to be contacted. Since the screws in the threaded bores 14 have contact with the carrier element 6 made of metal, they can be used to produce an electrically conductive connection of the carrier element and thus of the body to be contacted with a connecting cable, not shown in FIG. 1, for example an earth cable.
• the device 2 also has sealing lips 18, 20 which are arranged on the inner surface 16 of the base body and are spaced apart from one another in the axial direction and extend in the circumferential direction of the base body 4 and in the assembly position of the device 2 lie sealingly against the outer surface of the body to be contacted.
• additional sealing lips 22, 24 are arranged in addition to the sealing lips 18, 20 in the axial direction.
• the sealing lips 18, 20 and the further sealing lips 22, 24 consist in the illustrated embodiment of the same elastic material as the base body 4 and are integrally formed therewith.
• the device 2 according to the invention can be produced, for example, by the carrier element 6 being embedded in the elastic material by molding around it, forming the sealing lips 18, 20 and the further sealing lips 22, 24. From Fig. 2 it can be seen that a contact area 28 is left free by the elastic material on the inner surface 26 of the support member 6.
• the device 2 with the sealing lips 18, 20 and the further sealing lips 22, 24 lies on an outer surface 30 of an essentially cylindrical body, in the exemplary embodiment shown in the drawing on the outer surface (outer surface) of a cable 32.
• An electrically conductive region 34 is formed on the outer surface 30 of the cable 32 by stripping the outer conductor.
• a contact element 36 for establishing an electrically conductive connection between the outer surface 30 and the inner surface 26, which in this embodiment is formed by an element made of elastic graphite, which is formed with is connected to the carrier element 6 and is arranged in the axial direction of the base body 4 between the sealing lips 22, 24 at a distance therefrom.
• the contact element 36 can also consist of metal, for example formed by a strand or a metal braid.
• the base body 4 encloses the outer surface 30 of the Cable 32, the sealing lips 18, 20 and the further sealing lips 22, 24 being pressed together, come to bear sealingly on the outer surface 30 of the cable 32 and thus counteract the space formed between the inner surface of the base body and the outer surface 30 of the cable 32 seal against the ingress of dust and moisture.
• sealing means can be provided on the tabs 8, 10, which seal the space formed between the inner surface 16 of the base body 4 and the outer surface 30 of the cable 32 in the circumferential direction of the base body.
• Outer conductor of the cable 32 and an external conductor, for example an earth cable, can be produced.
• sealing lips 18, 20 are each arranged relative to the associated longitudinal edge 38, 40 of the carrier element 6 of the base body 4 such that the sealing lips 18, 20 each in the axial direction from an area inside of the associated longitudinal edge 38, 40 extend approximately into the area of the associated longitudinal edge 38, 40. In this way it is ensured that the material of the
• Sealing lips 18, 20 are evenly compressed when attaching the device 2 to the cable 32 between the carrier element 6 and the outer surface 30 of the cable 32, and not respectively in the axial direction to the outside is pushed away.
• the device 2 according to the invention is robust, durable and resistant to aging and can be subjected to high mechanical stresses. It can also be used in a wide temperature range.
• the device 2 shown in FIGS. 1 and 2 can also be used as a device for sealing, for example an electrically conductive contact or the like on an outer surface of a particularly cylindrical body to prevent moisture or dust from penetrating into the area of the contact.
• the contact means in particular the contact element 36 and possibly also the carrier element 6 made of metal, are not required.
• FIG. 3 shows the device 2 according to FIGS. 1 and 2 in the assembly position. It can be seen that the base body 4 abuts the cable 32 in this mounting position and encompasses this in the form of a sleeve.
• FIG. 4 shows a second exemplary embodiment of a device according to the invention for electrically conductive contact, which differs from the exemplary embodiment according to FIG. 1 in that instead of the contact element 36 contact projections are provided, of which only one with the reference symbol 38 in FIG. 4 provided contact protrusion is recognizable.
• the contact projection 38 is formed by a profile which is convex in cross section to the cable 32 and essentially circular in plan view in the form of a curvature.
• FIG. 6 which shows a schematic radial section through the device 2 in the assembly position, it can be seen that in addition to the contact projections 38, 40 there is also a further contact projection 42 and that the contact projections 38, 40, 42 in the circumferential direction of the base body 4 to one another are essentially equally spaced.
• FIG. 7 shows a third exemplary embodiment of a device 2 according to the invention, which differs from the exemplary embodiment according to FIG. 1 essentially in that separate end parts 44, 46 are connected to the tabs 8, 10, which in FIG Tabs 8, 10 are shown lifted off.
• the end parts 44, 46 are formed by molded parts which consist entirely of an elastic material.
• the end parts 44, 46 are sprayed onto flat surfaces 48, 50 of the tabs 8, 10 facing one another in the assembly position. However, they can also be connected to the tabs 8, 10 in any other way.
• the end parts 44, 46 have sealing surfaces 52, 54 which abut one another in a sealing manner.
• FIG. 8 shows a fourth exemplary embodiment of a device 2 according to the invention, which differs from the exemplary embodiment according to FIG. 1 in that the carrier element 6 is spaced apart from one another in the axial direction of the base body 4
• sealing lip parts 60, 62 which are glued into the beads 56, 58 or positively or can be held in a clamped manner, each have two sealing lips 64, 66 and 68, 70 spaced apart from one another in the axial direction.
• FIG. 9 shows the device 2 according to FIG. 8, the end part 46 being connected to the tab 8.
• the end part 46 can have recesses complementary to the free ends of the adjacent sealing lip parts 60, 62, into which the sealing lip parts 60, 62 also join engage their free ends.
• the end part 46 can also be intimately connected to the ends of the sealing lip parts 60, 62, for example by injection molding.
• FIG. 10 shows the device according to FIG. 9, the end part 44 being connected to the carrier element 6 in a manner corresponding to the end part 46.
• the sealing lip parts 60, 62 preferably consist of the same elastic material as the end parts 44, 46.
• the sealing lip parts 60, 62 can also be formed in one piece with the end parts 44, 46.
• the sealing lip parts 60, 62 and / or the end parts 44, 46 can for example also be sprayed onto the carrier element 6.

Landscapes

• Connector Housings Or Holding Contact Members (AREA)
• Cable Accessories (AREA)
• Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
• Contacts (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=7629788

Family Applications (1)

Country Status (13)

Families Citing this family (17)

Family Cites Families (15)

• 2000
  • 2000-02-04 DE DE10004887A patent/DE10004887A1/de not_active Ceased
  • 2000-11-03 BR BR0017085-2A patent/BR0017085A/pt not_active IP Right Cessation
  • 2000-11-03 RU RU2002123581/09A patent/RU2257651C2/ru not_active IP Right Cessation
  • 2000-11-03 CZ CZ20022609A patent/CZ20022609A3/cs unknown
  • 2000-11-03 EP EP00977471A patent/EP1252686A1/de not_active Withdrawn
  • 2000-11-03 AU AU2001215177A patent/AU2001215177A1/en not_active Abandoned
  • 2000-11-03 CA CA002399369A patent/CA2399369A1/en not_active Abandoned
  • 2000-11-03 TR TR2002/01811T patent/TR200201811T2/xx unknown
  • 2000-11-03 WO PCT/EP2000/010832 patent/WO2001057958A1/de not_active Application Discontinuation
  • 2000-11-03 PL PL00364870A patent/PL364870A1/xx not_active Application Discontinuation
• 2001
  • 2001-01-09 US US09/756,228 patent/US6534714B2/en not_active Expired - Fee Related
  • 2001-01-22 CN CNB011016906A patent/CN100433457C/zh not_active Expired - Fee Related
• 2002
  • 2002-07-18 ZA ZA200205735A patent/ZA200205735B/en unknown

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events