Electric heating – Heating devices – Resistive element: igniter type
Patent
1996-10-07
1999-05-04
Jeffery, John A.
Electric heating
Heating devices
Resistive element: igniter type
362 32, 219265, B60N 314
Patent
active
059001720
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION FIELD OF THE INVENTION
The present invention relates to a cigar lighter, especially for a motor vehicle, and the like.
It more particularly relates to the lighter body which such a cigar lighter has.
As is known, the lighter body serves as a receptacle for a removable heating plug equipped with a lighter body to light the cigar or cigarette and comprises an electrically conductive lighter socket, with a bottom, bearing internally with the provision of electrical insulation, by means of an attachment device and a first electrically insulating part, a connecting device normally in the form of a bimetallic strip.
This lighter socket comprises clearance openings opposite the blades of the bimetallic strip, able to be connected to the positive terminal of the voltage source, whereas the lighter socket is able to be connected to the negative terminal of the voltage source.
In practice, the lighter body is installed in a region where a number of wires and/or electric cables exist.
To prevent these wires and cables coming to touch the blades of the bimetallic strip accessible through the clearance openings, in document U.S. Pat. No. 2,701,297, it has already been proposed surrounding the lighter socket by an electrically conductive masking socket also serving for the mounting of the lighter socket.
More precisely the lighter socket is slid into an opening of a fixed wall of the vehicle, such as the dashboard or a console thereof serving for the attachment and the mounting of the lighter body, and is kept captive by means of the masking socket screwed onto a threaded portion borne by the rear end of the lighter socket.
Thus the open front end of the masking socket bears against the rear face of the fixed wall, whereas the open front end of the lighter socket has a generally transversally oriented edge bearing on the front or upper face of an end ring of an illuminant ring, which first ring, by its rear face, bears on the front or upper face of the fixed wall.
This fixed wall is thus sandwiched between the ring of the illuminant ring and the open front end of the masking socket.
As a result the assembly of the masking socket with the lighter socket is performed though the rear of the fixed wall and this assembly of the screw-nut type complicates the production of the sockets.
Furthermore in this document the fixed wall is electrically conductive with the result that the return of the current to the earth is performed by means of the said wall.
This therefore requires the destandardization of the lighter socket. Moreover the masking socket bears a lighting source, with the result that an opening has to be created in the masking socket for the lighting of the illuminant ring.
The object of the present invention is to remove these drawbacks and thus to create, in a simple and economical manner, a lighter body having a standard lighter socket and a simplified masking socket, the assembly of which is performed through the front of the fixed wall.
BRIEF SUMMARY OF THE INVENTION
According to the invention, a lighter body of the above-mentioned type is characterised in that the masking socket has a bottom which is adjacent and electrically connected to the bottom of the lighter socket. The bottom is mounted on the lighter socket by means of the attachment device for this purpose passing, with the provision of electrical insulation, through the bottoms of the lighter and masking sockets. The illuminant ring surrounds the masking socket and has at least one resiliently deformable attachment lug able to come into contact with the rear face of the fixed wall. The attachment means act between the masking socket and the illuminant ring to attach the masking socket to the illuminant ring.
Thanks to the invention a unitary assembly comprising the masking socket and lighter socket calling on a standard lighter socket is formed and the masking socket is simplified as, just like the lighter socket, it is devoid of a threaded portion.
The illuminant ring enables a mounting of the assembly of the masking
REFERENCES:
patent: 2701297 (1955-02-01), Thibault
patent: 4527048 (1985-07-01), Comerford et al.
patent: 4544226 (1985-10-01), Lupoli et al.
patent: 5093554 (1992-03-01), von Gaisberg et al.
Jeffery John A.
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