EP1085619A1 - Broche de contact courant conductrice avec une boule - Google Patents

Broche de contact courant conductrice avec une boule Download PDF

Info

Publication number
EP1085619A1
EP1085619A1 EP99610056A EP99610056A EP1085619A1 EP 1085619 A1 EP1085619 A1 EP 1085619A1 EP 99610056 A EP99610056 A EP 99610056A EP 99610056 A EP99610056 A EP 99610056A EP 1085619 A1 EP1085619 A1 EP 1085619A1
Authority
EP
European Patent Office
Prior art keywords
pin
housing
contact pin
current conducting
conducting contact
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.)
Withdrawn
Application number
EP99610056A
Other languages
German (de)
English (en)
Inventor
Jan-Olof Svensson
Fredrik Hermann
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Priority to EP99610056A priority Critical patent/EP1085619A1/fr
Publication of EP1085619A1 publication Critical patent/EP1085619A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/64—Devices for uninterrupted current collection
    • H01R39/643—Devices for uninterrupted current collection through ball or roller bearing
    • 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
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H01R13/2421—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means using coil springs

Definitions

  • the invention relates to a current conducting contact pin comprising a housing, at least one pin and a spring element, said at least one pin having an external end extending beyond the housing and an internal end located inside the housing, means being provided for restricting the extension of the pin outside the housing, said at least one pin being slidably located in the housing and the spring element forcing the pin to be in its outermost position.
  • the invention relates to a current conducting contact pin for use in electronic equipment, such as a mobile radio station or a communicator.
  • a contact pin of the mentioned type comprises a housing, a pin and a spring.
  • the pin has an external end extending beyond the housing and an internal end located inside the housing.
  • the internal end of the pin is provided with an outwardly extending collar that cooperates with an inwardly extending flange of the housing, thereby restricting the extension of the pin outside the housing.
  • the pin is slidably located in the housing and the spring forces the pin to be in its outermost position.
  • the contact pin is gold plated in order to enhance the conductivity of the contact pin and to ensure a firm contact between the external end of the pin and the battery terminal.
  • wear occurs at the external end of the pin and at the battery terminal, since the battery terminal to some extent slides over the end of the pin. The sliding also occurs to some extent even when the battery is mounted due to the play that exists between the different parts.
  • the gold plating is worn off and the underlying nickel element is exposed, which also means formation of nickel oxide. Eventually, this may lead to interruption of the current flow between the battery and the contact pin.
  • the object of the present invention is to provide a current conducting contact pin that is less exposed to wear than the known contact pins. This object is achieved by a contact pin as mentioned in the introduction wherein the external end of the pin is provided with a seat in which a ball is rotatably mounted.
  • the battery terminal no longer slides over the external end of the pin but rather rolls over the external end of the pin, causing less wear to occur.
  • a conductive lubricant is provided between the seat and the ball which reduces the friction between the seat and the ball. In turn, this reduces the wear even further.
  • the ball In case of a gold plated contact pin the ball is provided with a thin layer of gold. Due to the reduced wear the gold layer has a thickness of approximally 1.5 ⁇ m, which is the recommended thickness of gold plating and which is less than the thickness provided on the known contact pins.
  • the spring element is a helical spring positioned between the bottom of the housing and the proximal end of the pin.
  • the internal end of the pin has an inclined end face and a second ball is arranged between the helical spring and the internal end of the pin.
  • the bottom of the housing can be mounted on a component carrier, such as a PCB, in different ways.
  • the bottom of the housing is configured to be surface mounted on the component carrier.
  • the bottom may also be provided with a plug for being plugged into a complementary socket that is mounted on the component carrier, or it may be provided with a plug provided with threads for being arranged into a hole in a current conductive element, such as a PCB.
  • the current conducting contact pin may also be provided with two pins that extend beyond the housing in opposite directions.
  • the contact pin according to the invention is preferably mounted in an electronic device which may be a mobile radio station, such as a mobile telephone or a communicator.
  • Fig. 1 shows a contact pin 1 being surface mounted on a component carrier, such as a PCB 2, via a soldering material 3.
  • the contact pin 1 comprises a housing 4, a pin 5, a helical spring 6 and a ball 7.
  • the pin 5 has an internal end positioned inside the housing 4 and an external end provided with a seat 8 in which the ball 7 is arranged.
  • the pin 5 is provided with an outwardly extending collar 9 at the internal end thereof, said collar 9 cooperating with an inwardly extending flange 10 of the housing 4 preventing the pin 5 from being removed from the housing 4.
  • the helical spring 6 is positioned between the bottom of the housing 4 and the internal end of the pin 5 and forces the pin 5 to be in its outermost position.
  • the internal end of the pin 5 has an inclined end face 11 and a second ball 12 is arranged between the spring 6 and the inclined end face 11 of the pin 5.
  • This structure accomplishes lateral displacement of the pin 5, whereby a firm contact is established between the collar 9 of the pin 5 and the inner wall of the housing 4 for providing good current conductivity between the two parts.
  • a conductive lubricant is provided between the seat 8 and the ball 7 in order to facilitate the rolling movement of the ball 7 in the seat 8 and in order to ensure current conduction between the ball 7 and the pin 5.
  • the housing 4, the pin 5 and the ball 7 are preferably gold plated in order to ensure good conductivity of the parts.
  • the thickness of the gold layer is approximally 1.5 ⁇ m, which is the recommended thickness.
  • Fig. 2 shows the current conducting contact pin 1 shown in Fig. 1 in contact with a terminal 13 which e.g. may be a part of a rechargeable battery.
  • the terminal 13 presses the pin 5 downwards and the helical spring 6 ensures a firm contact between the pin 5 with the ball 7 and the terminal. Thereby, a good current conductivity is ensured from the battery terminal 13 to the PCB 2.
  • the current travels from the battery terminal through the ball 7, via the current conductive lubricant to the pin 5, further through the housing 4 and, finally, via the soldering material 3 to the PCB 2.
  • the contact pin 1 shown in Figs. 1 and 2 are soldered to a PCB 2 via soldering material 3. However, the contact pin 1 may be connected to the PCB 2 by other means than soldering.
  • FIG. 3 shows a contact pin 1 that corresponds to the contact pin 1 shown in Figs. 1 and 2, except for the mounting on the PCB 2.
  • the housing 4 is provided with a plug 14 adapted to be mounted in a socket 15 that is soldered to the PCB 2 by means of a soldering material 3.
  • the housing 4 is provided with a plug 16 provided with threads for being arranged into a hole 17 in the PCB 2.
  • a plug 16 provided with threads for being arranged into a hole 17 in the PCB 2.
  • the plug 16 provided with threads extends through a hole 17 in the PCB 2 and a nut 18 is screwed onto the plug 16, thereby fastening the contact pin 1 to the PCB 2.
  • Fig. 5 shows a double-ended current conducting contact pin 19 provided with two pins 5 that extend beyond the housing 4 in opposite directions.
  • This contact pin 19 comprises a housing 4 with an opening in each end thereof.
  • a pin 5 extends through each opening, said pin 5 being provided with a seat 8 with a ball 7 at the external end and with a conductive lubricant between the ball 7 and the seat 8 of the pin 5.
  • a helical spring 6 is provided inside the housing 4 between the internal ends of the pins 5, said helical spring 6 forcing the pins 5 to their outermost positions.
  • Each pin 5 is provided with an inclined end face 11 and a second ball 12 is provided between the helical spring 6 and the inclined end face 11 in order to ensure a firm contact between the pin 5 and the housing 4.
  • the double-ended contact pin 19 may be soldered to a PCB and can be used for transferring current between two exchangeable parts or it can be moulded into a carrier.
  • the current conducting contact pin 1, 19 according to the invention has been described in connection with exchangeable parts, such as rechargeable batteries.
  • the contact pin 1, 19 may also be used in connection with other mounted parts, such as loudspeakers in mobile telephones, since some play always occur between different parts that are not soldered together.
  • the small but inevitable play causes some wear on the surfaces of the terminal and on the end of traditional contact pins to occur.
  • By using a contact pin 1, 19 according to the invention for receiving movements between parts the wear is considerably reduced.
  • a helical spring 6 is provided for pressing the pin 5 to its outermost position.
  • Other spring elements are, however, applicable, e.g. leaf springs.
  • the inclined internal end face 11 of the pin 5 and the second ball 12 between the spring 6 and the inclined end face 11 may be replaced by other means ensuring a good contact between the pin 5 and the housing 4.

Landscapes

  • Telephone Set Structure (AREA)
EP99610056A 1999-09-20 1999-09-20 Broche de contact courant conductrice avec une boule Withdrawn EP1085619A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99610056A EP1085619A1 (fr) 1999-09-20 1999-09-20 Broche de contact courant conductrice avec une boule

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99610056A EP1085619A1 (fr) 1999-09-20 1999-09-20 Broche de contact courant conductrice avec une boule

Publications (1)

Publication Number Publication Date
EP1085619A1 true EP1085619A1 (fr) 2001-03-21

Family

ID=8242561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99610056A Withdrawn EP1085619A1 (fr) 1999-09-20 1999-09-20 Broche de contact courant conductrice avec une boule

Country Status (1)

Country Link
EP (1) EP1085619A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013180692A1 (fr) * 2012-05-29 2013-12-05 Intel Corporation Interconnexion électrique incluse dans un substrat
US10644468B2 (en) 2017-06-30 2020-05-05 Benchmark Electronics, Inc. Medical lead connectors with contact electrodes
EP3648263A1 (fr) * 2018-11-02 2020-05-06 Benchmark Electronics, Inc. Connecteurs de dérivation médicale avec électrodes de contact

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184559A (en) * 1960-06-07 1965-05-18 Oxley Robert Frederick Multi-contact rotary electric switch with resiliently biased conductive pins
US4397519A (en) * 1981-05-12 1983-08-09 Pylon Company, Inc. Electrical contact construction
US5308941A (en) * 1993-04-12 1994-05-03 Motorola, Inc. Roller contact assembly
US5749754A (en) * 1996-07-19 1998-05-12 Ericsson, Inc. Radiotelephone having a combination fastener and electrical connector
US5899753A (en) * 1997-04-03 1999-05-04 Raytheon Company Spring-loaded ball contact connector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184559A (en) * 1960-06-07 1965-05-18 Oxley Robert Frederick Multi-contact rotary electric switch with resiliently biased conductive pins
US4397519A (en) * 1981-05-12 1983-08-09 Pylon Company, Inc. Electrical contact construction
US5308941A (en) * 1993-04-12 1994-05-03 Motorola, Inc. Roller contact assembly
US5749754A (en) * 1996-07-19 1998-05-12 Ericsson, Inc. Radiotelephone having a combination fastener and electrical connector
US5899753A (en) * 1997-04-03 1999-05-04 Raytheon Company Spring-loaded ball contact connector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013180692A1 (fr) * 2012-05-29 2013-12-05 Intel Corporation Interconnexion électrique incluse dans un substrat
US10644468B2 (en) 2017-06-30 2020-05-05 Benchmark Electronics, Inc. Medical lead connectors with contact electrodes
EP3648263A1 (fr) * 2018-11-02 2020-05-06 Benchmark Electronics, Inc. Connecteurs de dérivation médicale avec électrodes de contact

Similar Documents

Publication Publication Date Title
US6814626B2 (en) Electrical connector for chargeable battery
US7128581B2 (en) Connector for connecting circuit boards
US7390196B2 (en) Connector, and portable terminal equipment including the connector
US7534146B2 (en) Audio jack and PCB assembly having the audio jack
US7261568B2 (en) Electrical connector
KR100504165B1 (ko) 전자장치에 포함된 버튼형 배터리용 커넥터
US7083454B2 (en) Connector
US6607400B1 (en) Low profile RF connector assembly
US6368129B1 (en) Electrical connector with outer and inner sleeves
KR20000067860A (ko) 조합 파스너 및 전기 커넥터를 가진 무선 전화기
US5066235A (en) Connector assembly for electronic devices
EP1061608A3 (fr) Connecteurs électriques entre deux plaquettes à circuits imprimés
EP1065863B1 (fr) Un radiotéléphone
US6022248A (en) Connecting terminal having enhanced biasing force
JP2859895B2 (ja) 電気接点ユニット
EP0923215A3 (fr) Mécanisme de charnière pour téléphone mobile
US6478586B1 (en) Electrical connector having conductive terminals that are provided with a dielectric coating
EP1085619A1 (fr) Broche de contact courant conductrice avec une boule
US6435892B1 (en) Electrical connector with a supporting mechanism
US6224388B1 (en) In-board connector
US6320144B1 (en) Coaxial connector switch
EP1313173B8 (fr) Connecteur électrique pin-grid-array
JP2004047376A (ja) コンタクトユニット
EP0409640B1 (fr) Assemblage de connecteur pour dispositifs électroniques
JPH07211383A (ja) 電気接続用コネクタ

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL PAYMENT 19991014;LT PAYMENT 19991014;LV PAYMENT 19991014;MK PAYMENT 19991014;RO PAYMENT 19991014;SI PAYMENT 19991014

AKX Designation fees paid

Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AXX Extension fees paid

Free format text: AL PAYMENT 19991014;LT PAYMENT 19991014;LV PAYMENT 19991014;MK PAYMENT 19991014;RO PAYMENT 19991014;SI PAYMENT 19991014

17P Request for examination filed

Effective date: 20010830

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20070403