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
  • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
  • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
  • H01R13/633—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for disengagement only
  • H01R13/635—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for disengagement only by mechanical pressure, e.g. spring force
• • 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
  • H01R13/66—Structural association with built-in electrical component
  • H01R13/70—Structural association with built-in electrical component with built-in switch
  • H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
  • H01R13/7132—Structural association with built-in electrical component with built-in switch the switch being a safety switch having ejecting mechanisms
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R2103/00—Two poles
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
  • H01R24/28—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable

Definitions

• NO patent No. 165 088 a device is disclosed, which is arranged to effect an automatic withdrawing of a plug being part of an electric heating device for motor vehicles.
• the withdrawing device of this heating device is very bulky, meant to be mounted in a garage, and arranged to pull the coupling up to a position at a higher level, out of the reach of children.
• the known device has a weight-loaded, upward sloping, pull-biased wire for moving said electrically established coupling up to the top of a column, where the coupling no longer represents a hazard.
• a wire connected to the plug is subjected to an upward sloping pull to said higher coupling parking level, by means of a weight attached to the other end of the wire, and the wire is placed over a pulley at the top of the column.
• the device requires a column of a certain minimum height, which provides a plug-pulling device too bulky for diverse application.
• a plug-extracting device In a plug-extracting device according to the invention is included at least one central, axially directed piston in the plug, which piston has two main positions along the longitudinal axis of the piston, namely a first, withdrawn, idle position, in which the front attacking end of the piston towards the fixed socket does not apply any push force when the contact pins of the plug are fully engaged in the insertion holes of the socket with the aim of intentionally establishing an electric connection between a plug at the end of an electric cable belonging to an electric appliance etc.
• the piston has an idle position and an activated state.
• the piston may be activated directly or indirectly.
• around the piston which consists of ferro-magnetic metal and forms a core, is wound an electric line wire for the formation of a concentric induction coil with a wire connection to earth and to the starting motor of the vehicle.
• a condenser arranged to accelerate the coil.
• the starting motor is activated on starting the car motor, the coil about the piston receives elec- tricity from the storage battery of the vehicle.
• the piston On activation, i.e. when the coil is made current carrying, the piston is subjected to a powerful axially directed displacement in the direction of the socket, whereby the plug is forced out.
• the signal to the signal decoder/receiver comes from a transmitter which may be attached to the electric appliance or tool, to which the plug belongs, for example a vacuum cleaner or an electric saw.
• FIG. 3 showing the plug in the position for immediate plugging into a socket, corresponding to fig. 1;
• FIG. 4 showing the plug in its plugged-in position, corresponding to fig. 2;
• Figs. 6 and 7 show, in axial section, a plug-extracting device according to a fourth embodiment
• FIG. 6 showing the plug positioned for immediate plugging into a socket, corresponding to fig. 1;
• Fig. 7 showing the plug in the plugged-in position, corresponding to fig. 2.
• a plug 10 has axially flush guiding holes 12, 12' in its opposite end walls 10', 10' ' for a centrically arranged, linearly formed rod-piston 14 with an outer attacking head 14 ' , which in the withdrawn, idle stand-by position of the piston 14, fig. 2, may have been retracted into a recess in the end wall surface 10'' of the socket 10, nearest to the socket 16.
• the centric piston 14 has got a wound-on line wire for the formation of an induction coil 24, as the piston consists of ferro-magnetic metal.
• the coil 24 is, through two electric wires 26, 26', via a condenser 28 which is arranged to enable acceleration of the coil 24, but which may optionally be omitted, connected to earth and to the starting motor (not shown) of the motor vehicle.
• a second embodiment is shown in figs. 3 and 4, in which parts corresponding or functionally equivalent to parts according to figs. 1 and 2 are designated by the same reference numerals.
• the piston 14 has not a coil of its own arranged thereto, but is, on the other hand, provided with a compression spring in the form of a helical spring 30, which is surrounded, in its compressed state, fig. 4, by a sleeve 32, having an end wall 32', which is fixed to the piston 14.
• the sleeve 32, 32' will enclose a part of the length of the compression spring 30 when this is expanded, fig. 3.
• the compression spring 30 is suspended between the front surface of the end wall 10' and the sleeve bottom which is formed by the rear surface of the end wall 32' of the sleeve.
• the task of the compression spring 30 is to expand from the compressed state in fig. 4 to the state according to fig. 3, thereby pushing the plug 10 out of the socket 16 in the same way as described in connection with the embodiment in figs. 1 and 2.
• the blocking means 36 of preferably ferro-magnetic material which is surrounded by a coil 38 of line wire, that has a signal decoder/receiver 28 arranged thereto, and through which it is connected to the current carrying conductors 50, 50' of the electric cable.
• the embodiment according to figs. 3 and 4 may be used with portable appliances and tools, such as vacuum cleaners, electric lawn mowers and similar electric tools.
• the signal decoder/receiver 28 picks up current to the coil 38 and is arranged to receive a signal making it respond.
• the signal comes from a transmitter (not shown) which may be attached to, for example, a vacuum cleaner. It is known within the art to use the current carrying conductors 50, 50' as such signal carriers.
• a somewhat elongate hollow body 42 has two end walls transverse to the longitudinal axis of the adjacent piston portion 14a', which end walls have one guiding hole each for said piston portion 14a 1 .
• the embodiment according to fig. 5 leaves more freedom of choice as to placing the coil/condenser 24, 28, which does not have to be placed at the plug 10 itself.
• Figs. 6 and 7 show a further embodiment which essentially corresponds to the embodiment of figs. 3 and 4, and identical parts in these figures are designated by the same reference numerals.
• the embodiment in figs. 6 and 7 differs from the other embodiments by having, instead of a central rod-like piston 14, 14a, an alternatingly moveable, spring- loaded tube 14B with a central longitudinal axis.
• the tube-shaped piston 14B has a graded portion 14B' of larger diameter (both internally and externally) , but in the example smaller wall-thickness than the remaining part of the tubular piston 14B.
• the second end of the spring 30A bears supportingly against an end surface 52 ' in an annular space 52, formed in the plug 10, for the spring 30A.

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=19899259

Family Applications (1)

Country Status (6)

Cited By (9)

Families Citing this family (3)

Citations (5)

Family Cites Families (1)

• 1996
  • 1996-04-15 NO NO961492A patent/NO303955B1/no unknown
• 1997
  • 1997-04-10 WO PCT/NO1997/000094 patent/WO1997039497A1/en not_active Application Discontinuation
  • 1997-04-10 EP EP97917488A patent/EP0894346A1/en not_active Withdrawn
  • 1997-04-10 AU AU25788/97A patent/AU704788B2/en not_active Ceased
  • 1997-04-10 JP JP9536985A patent/JP2000500911A/ja active Pending
  • 1997-04-10 CA CA002251697A patent/CA2251697A1/en not_active Abandoned

Patent Citations (5)

Non-Patent Citations (2)

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