EP0114919B1 - Contact à pression - Google Patents

Contact à pression Download PDF

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Publication number
EP0114919B1
EP0114919B1 EP83104842A EP83104842A EP0114919B1 EP 0114919 B1 EP0114919 B1 EP 0114919B1 EP 83104842 A EP83104842 A EP 83104842A EP 83104842 A EP83104842 A EP 83104842A EP 0114919 B1 EP0114919 B1 EP 0114919B1
Authority
EP
European Patent Office
Prior art keywords
contact
tube
contact pin
pressure
guide part
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
Application number
EP83104842A
Other languages
German (de)
English (en)
Other versions
EP0114919A1 (fr
Inventor
Theo Kaminsky
Klaus Albrecht Steinert
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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 Carl Freudenberg KG filed Critical Carl Freudenberg KG
Priority to AT83104842T priority Critical patent/ATE19163T1/de
Publication of EP0114919A1 publication Critical patent/EP0114919A1/fr
Application granted granted Critical
Publication of EP0114919B1 publication Critical patent/EP0114919B1/fr
Expired 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
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2464—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the contact point
    • H01R13/2471—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the contact point pin shaped

Definitions

  • the invention relates to a pressure contact, consisting of two coaxially assigned and in liquid-tight and electrically insulated contact pins mounted in sockets, in which at least one of the sockets is made of elastic material, is designed as a spring body in which one of the contact pins is axially movable, and with a sealing lip enclosing the contact surface of the contact pin on the edge and sealingly rests against the opposite socket under an elastic pretension, in order to achieve a uniform and liquid-tight contact pressure of the contact surfaces of both contact pins in the assembled state.
  • a pressure contact of the aforementioned type is known from DE-A-20 48 578.
  • the sockets used here are cup-shaped and almost completely enclose the contact points not only on the edge but also on the back.
  • the sealing achieved in the assembled state is unsatisfactory and often results in interference in the transmission of electrical signals.
  • Pressure contacts of the type specified above are required to transmit electrical signals from sensors in machine elements, the sensors being manually or automatically inserted and clamped in a clamping unit of a processing machine.
  • the space available is extremely limited, and it is therefore difficult to ensure good electrical insulation in the long term, especially with regard to the more or less continuous exposure to metal chips and / or liquid coolants.
  • the invention has for its object to show a cost-effective pressure contact of small size for the application area mentioned, which ensures reliable transmission of electrical signals while avoiding short-circuiting.
  • a pressure contact of the type mentioned in which the spring body is formed by a hose with a central guide part for the one contact pin, in which the hose is provided with a projection projecting beyond the guide part in the axial direction and in which the Projection has at least one inwardly projecting bead which engages around the contact pin in an undercut adapted profile.
  • the spring elasticity of the spring body is significantly improved by this design and causes reliable transmission of electrical signals while avoiding short-circuiting.
  • the hose can consist of several individual parts that are glued or clamped together.
  • it has proven to be more advantageous to manufacture the hose monolithically, homogeneously from a single block of material, and to give it its final shape in the course of a compression molding process.
  • the use of elastomeric polyurethane has proven particularly effective because of its higher abrasion resistance.
  • the contact pin can be provided with a circumferential step, which engages an undercut adapted profile of the hose. This improves the axial setting.
  • the hose can be provided with a circumferential bead and the bead can engage in an undercut of an adapted profile of the receiving bore. It is thereby fixed in a particularly simple manner in the axial direction.
  • the tube 1 according to FIG. 1 consists of a rubber-elastic material with a Shore A hardness of 60. This is divided in the axial direction into the gripping lip part 5, the guide part 2 and the projection 3.
  • the gripping lip part 5 serves to axially fix the contact pin 13 provided with a mushroom-shaped head 9. This is partially enclosed on the end face by the sealing lip 6, so that liquid cannot penetrate into the space between the hose 1 and the contact pin 13 in the event of accidental loading.
  • the guide part 2 ensures a coaxial assignment of the received contact pin 13 to the receiving housing bore. This assignment is always retained even when the contact pin is axially displaced.
  • the guide part 2 is provided with a bead 7 projecting outwards in the radial direction, which serves to axially fix it in the receiving housing bore.
  • the projection 3 projecting beyond the guide part 2 in the axial direction has a comparatively substantially reduced wall thickness and a bead 4 projecting inwards. Via the latter, the forces introduced when the contact pin to be received is pressed into the projection 3, which is thereby elastically stretched, and one Resetting of the contact pin when the indentation force decreases.
  • the spring force released is essentially constant, whereby a constant pressure of the contact surface 9 of the contact pin 13 against the associated contact surface of the opposite contact pin 14 is ensured while avoiding overloads.
  • Figure 2 makes reference to the pressure contact and subsequent to the coaxial compression of the contact surfaces of the contact pins 13 and 14.
  • These consist of a conductive material, preferably of metal, and are mounted in a liquid-tight socket 1.12 made of a non-conductive material. They have a terminal contact at the rear end for connecting an electrical conductor, for example a cable.
  • the socket 12 of the upper contact pin consists of a molded body made of synthetic resin. It ends together with the receiving housing part 16 and the contact surface of the upper contact pin 14 in a common plane.
  • the lower contact pin 13 is mounted in a liquid-impermeable hose 1 made of an elastic material. It has a hemispherical contact surface 9, which extends beyond the end face 8 of the receiving housing part 15 in the axial direction before assembly, as well as the sealing lip 5 which partially surrounds the contact surface 9.
  • the axial fixation of the tube piece 1, based on the receiving housing part 15, takes place through the circumferential bead 7. This engages in an associated groove of the receiving housing part 15, which has a congruent profile.
  • two stages 10, 11 are provided which engage in correspondingly formed undercuts of the contact pin 13.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Secondary Cells (AREA)
  • Measuring Fluid Pressure (AREA)

Claims (4)

1. Contact à pression constitué de deux broches de contact (13, 14) disposées coaxialement l'une à l'autre et montées dans des douilles (1, 12) en assurant l'étanchéité aux liquides et l'isolation électrique, dans lequel au moins l'une des douilles (1, 12) est réalisée en matériau élastique et constitue un corps élastique dans lequel l'une des broches de contact (13) est placée, avec possibilité de déplacement axial, et avec une lèvre d'étanchéité (5) entourant périphériquement la surface de contact de la broche de contact (13) et prenant appui sur la douille opposée (12), en assurant l'étanchéité - sous une précontrainte élastique, afin d'obtenir une compression uniforme et étanche aux liquides des surfaces de contact des deux broches de contact (13, 14) à l'état assemblé, caractérisé en ce que l'élément élastique est constitué par un tuyau souple (1) avec une pièce de guidage centrale (2) pour une broche de contact (13), en ce que le tuyau souple (1) est pourvu d'une saillie (3) dépassant, en direction axiale, la pièce de guidage (2) et en ce que la saillie (3) présente, au moins, un bourrelet (4) faisant saillie vers l'intérieur et enserrant la broche de contact (13) dans une contre-dépouille de profil approprié.
2. Contact à pression selon la revendication 1, caractérisé en ce que le tuyau souple (1) est constitué d'une pièce d'un matériau monolithique et homogène.
3. Contact à pression selon les revendications 1 et 2, caractérisé en ce que la broche de contact (13) est pourvue d'un épaulement périphérique (10) et en ce que l'épaulement (10) vient s'emboîter dans une contre-dépouille de profil approprié du tuyau souple (1).
4. Contact à pression selon les revendications 1 à 3, caractérisé en ce que le tuyau souple est pourvu d'un bourrelet périphérique (7) et en ce que le bourrelet (7) vient s'emboîter dans une contre-dépouille de profil approprié de l'alésage récepteur.
EP83104842A 1982-12-28 1983-05-17 Contact à pression Expired EP0114919B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83104842T ATE19163T1 (de) 1982-12-28 1983-05-17 Druckkontakt.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3248336 1982-12-28
DE3248336A DE3248336C1 (de) 1982-12-28 1982-12-28 Druckkontakt

Publications (2)

Publication Number Publication Date
EP0114919A1 EP0114919A1 (fr) 1984-08-08
EP0114919B1 true EP0114919B1 (fr) 1986-04-09

Family

ID=6181977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83104842A Expired EP0114919B1 (fr) 1982-12-28 1983-05-17 Contact à pression

Country Status (3)

Country Link
EP (1) EP0114919B1 (fr)
AT (1) ATE19163T1 (fr)
DE (2) DE3248336C1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2812459A1 (fr) * 2000-07-25 2002-02-01 Thomson Csf Fiche de connecteur et son procede de fabrication
DE102012215954A1 (de) * 2012-09-10 2014-03-13 Tyco Electronics Amp Gmbh Elektrische Kontaktvorrichtung, insbesondere Steckverbinder
DE102019109940B4 (de) * 2019-04-15 2020-12-10 Cinogy Gmbh Behandlungsanordnung für die Behandlung einer Oberfläche eines Körpers mit einem dielektrisch behinderten Plasma

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1730714U (de) * 1954-10-11 1956-09-27 Siemens Ag Einrichtung zum abdichten von in einer wanddurchbrechung angeordneten betaetigungsdruckknoepfen.
FR1185592A (fr) * 1956-11-05 1959-08-03 Plessey Co Ltd Connecteur à contact par aboutement
DE1798766U (de) * 1958-03-21 1959-10-29 Calor Emag Elektrizitaets Ag Druckkontaktanordnung.
GB975395A (en) * 1959-10-13 1964-11-18 Secr Aviation Improvements in or relating to electrical connectors
FR2062051A5 (fr) * 1969-10-08 1971-06-25 Inst Francais Du Petrole
US4146286A (en) * 1978-04-17 1979-03-27 Ford Motor Company Electrical connection apparatus and method

Also Published As

Publication number Publication date
EP0114919A1 (fr) 1984-08-08
DE3362886D1 (en) 1986-05-15
DE3248336C1 (de) 1984-07-05
ATE19163T1 (de) 1986-04-15

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