US3853378A - Locking devices for movable pin-shaped electrical contacts - Google Patents

Locking devices for movable pin-shaped electrical contacts Download PDF

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Publication number
US3853378A
US3853378A US00266677A US26667772A US3853378A US 3853378 A US3853378 A US 3853378A US 00266677 A US00266677 A US 00266677A US 26667772 A US26667772 A US 26667772A US 3853378 A US3853378 A US 3853378A
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US
United States
Prior art keywords
pin
pins
pair
housing
plug
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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
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US00266677A
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English (en)
Inventor
A Louis
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Individual
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Individual
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Filing date
Publication date
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Publication of US3853378A publication Critical patent/US3853378A/en
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
    • H01R13/02—Contact members
    • H01R13/193—Means for increasing contact pressure at the end of engagement of coupling part, e.g. zero insertion force or no friction

Definitions

  • ABSTRACT A plug device for engaging a cooperating device for transferring electrical current in which one or more pairs or pins are supported by a housing with one pin of each pair being fixed relative to the housing and one end portion of both pins being engagable with the cooperating plug device.
  • a fulcrum point is established for the other pin of each pair, with the latter being engaged by an actuation lever for urging the one end portion thereof about said fulcrum point in a direction away from the one end portion of the other pin to increase the contact pressure with the corresponding plug device.
  • An electric connection device as claimed in claim 1 and comprising four poles in which the angular displacement (1) between two consecutive angular positions of a contact support with respect to the guiding means is 15 whilst the three phase contacts are disposed at intervals along their positionlocation circumference starting from the neutral at locations of 90, 180 and 285 in the reverse direction.
  • An electric connection device as claimed in claim 4 wherein the safety disc is provided with six openings 7.
  • This present invention relates to a locking device for mobile pin shaped electric contacts.
  • Electrical connection devices for household and industrial equipment generally consist of plug members, including variously shaped pins which slide with various degrees of friction into corresponding socket members.
  • contact between the plug and socket is very often mediocre, even in arrangements in which a slit is provided in the pins to give them some elasticity since the elasticity very often deteriorates due to the strain to which the pins are subjected through normal use.
  • faulty contacts have a tendency to generate radio-electric strays.
  • An object of this invention is to remedy these inconveniences.
  • One advantage of this invention is in the fact that the insertion and removal of the plug is effortless, due to the provision of a lever which controls the contact pressure between the plug and the socket.
  • the pins may be made of cold drawn brass for current quality, and of berylium bronze for higher quality, for example.
  • the increase in the contact pressure may be limited to a value in which emergency re moval of the plug is possible without having to reduce the pressure by movement of the lever.
  • FIG. 1 represents a cross section view of a current P
  • FIG. 2 represents a cross section view of an alternative of a plug
  • FIG. 3 represents a cross section taken along the line A-A of FIG. 2.
  • FIG. 4 represents a cross section taken along the line B-B of FIG. 2
  • FIG. 5 represents another alternative of a plug
  • FIG. 6 represents a fourth alternative of a plug
  • FIG. 7 represents a plug with automatic tightening and loosening.
  • FIG. 8 represents a cross section of a conducting portion of the cam used in the plug of the present invention
  • FIG. 9 represents the tightening lever used in the present invention equiped with a fuse
  • FIG. 10 is an end view of a female plug with limited elastic deformation
  • FIG. II is a cross section view of the plug of FIG. 10
  • FIG. 12 represents another alternative of an outside tightening plug
  • FIG. 13 shows the cross section taken along the line A of FIG. 12
  • FIG. 1 represents an electrical plug according to the present invention which includes a body 1 which sup ports a pair of pins 2 and 3 a portion of each of which are adapted to extend within a corresponding female socket (not shown) for completing an electrical eonneetion.
  • the pin 2 is fixed relative to the body 1 and supports a tightening screw 5 for the electrical conductor 6.
  • the pin'3 is fulcrummed about a boss 4 formed on the pin 2 under the action of a cam 7 mounted in the body 1 and engaging an end portion of the pin 3.
  • the cam 7 is operated by a lever 8 which is pivotally mounted to the body 1 for movement between a position shown in the solid lines in which the cam acts on the pin 3 in a manner to force the free end portion of the pin away from the pin 2 to tighten the connection with the socket, and a position shown in the dashed lines in which this force is relaxed.
  • a lever 8 which is pivotally mounted to the body 1 for movement between a position shown in the solid lines in which the cam acts on the pin 3 in a manner to force the free end portion of the pin away from the pin 2 to tighten the connection with the socket, and a position shown in the dashed lines in which this force is relaxed.
  • the plug is easily inserted or removed from the socket with the lever 8 in the position shown in the dashed lines, while the contact pressure between the pins 2 and 3 and their corresponding members in the socket can be increased by moving the lever to the position shown in the solid lines.
  • two pins 9 and 10 formed of a conducting material such as metal, are mounted in the body 15 with their free end portions projecting therefrom and adapted to extend in the eavity 11 of the socket 12.
  • a screw 13 is supported by the body 15 and is adapted to engage and secure a conductor 14.
  • the pin 9 is fixed relative to the body 15 by means of a boss having an opening 16 therein for receiving a tab 17 integral with the pin 9.
  • the pin 9 is in contact throughout its outside surface portion with the inner wall of the socket 12 and is provided with a tightening screw 18 for securing a conductor 19.
  • the other end portion 20 of the pin 10 is bent in a manner to extend between two bosses formed in the body 15, and a lever 21, having a cam 22 fixed thereto, is pivoted relative to the body 15 about a point 23.
  • the cam 22 engages the pin 10 to rock same between a tightening and 4 loosening position about a contact point 24 to move the free ends of the pins 9 and 10 away from each other and increase the contact pressure against the inner wall of the socket 12 in the area 25.
  • FIGS. 3 and 4 represent cross sections AA and BB of FIG. 2.
  • the cavity 11 in the body 12 of the female plug tightens on the half pins 9 and 10 which in the portions introduced into the cell 11, are in the shape of a half UNITED STATES T PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3 853378 Dated December 10, 1974 Inventor (s) ARMEL LOUIS Itis certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
US00266677A 1971-06-24 1972-06-27 Locking devices for movable pin-shaped electrical contacts Expired - Lifetime US3853378A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7123136A FR2142771B1 (it) 1971-06-24 1971-06-24
FR7220257A FR2141784B2 (it) 1971-06-24 1972-06-06

Publications (1)

Publication Number Publication Date
US3853378A true US3853378A (en) 1974-12-10

Family

ID=26216478

Family Applications (1)

Application Number Title Priority Date Filing Date
US00266677A Expired - Lifetime US3853378A (en) 1971-06-24 1972-06-27 Locking devices for movable pin-shaped electrical contacts

Country Status (10)

Country Link
US (1) US3853378A (it)
JP (1) JPS5512707B1 (it)
BE (1) BE785421A (it)
CH (1) CH576708A5 (it)
DE (2) DE7223583U (it)
ES (1) ES404191A1 (it)
FR (2) FR2142771B1 (it)
GB (1) GB1392738A (it)
IT (1) IT956826B (it)
NL (1) NL7208591A (it)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2186746B (en) * 1986-02-05 1990-02-21 Timothy Shorrock Improvements relating to safety plugs
JP7107170B2 (ja) * 2018-10-31 2022-07-27 トヨタ自動車株式会社 給電用の端子構造

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434154A (en) * 1946-10-16 1948-01-06 Paul E Gurin Electrical attachment plug
US2476365A (en) * 1947-06-05 1949-07-19 Frank C Greco Contact plug for electric cords
US3374455A (en) * 1965-10-21 1968-03-19 Dennis J. Sullivan Electrical connector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434154A (en) * 1946-10-16 1948-01-06 Paul E Gurin Electrical attachment plug
US2476365A (en) * 1947-06-05 1949-07-19 Frank C Greco Contact plug for electric cords
US3374455A (en) * 1965-10-21 1968-03-19 Dennis J. Sullivan Electrical connector

Also Published As

Publication number Publication date
GB1392738A (en) 1975-04-30
DE7223583U (it) 1972-09-28
BE785421A (fr) 1972-10-16
FR2141784A2 (it) 1973-01-26
DE2230879B2 (de) 1976-12-02
JPS5512707B1 (it) 1980-04-03
FR2142771A1 (it) 1973-02-02
IT956826B (it) 1973-10-10
FR2141784B2 (it) 1974-03-22
NL7208591A (it) 1972-12-28
ES404191A1 (es) 1975-10-16
DE2230879A1 (de) 1972-12-28
DE2265136A1 (de) 1976-08-05
CH576708A5 (it) 1976-06-15
FR2142771B1 (it) 1973-11-30

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