Communications: electrical – Land vehicle alarms or indicators – Of burglary or unauthorized use
Reexamination Certificate
1999-07-15
2001-05-29
Hofsass, Jeffery (Department: 2736)
Communications: electrical
Land vehicle alarms or indicators
Of burglary or unauthorized use
C340S555000, C362S501000, C296S146700
Reexamination Certificate
active
06239693
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to a security system for a motor vehicle opening leaf.
The invention relates more specifically to a security system for an opening leaf of a motor vehicle of the type in which the opening leaf is held in the closed position by a lock which is operated by means of a handle arranged on the outside of a bodywork panel of the opening leaf, of the type in which the security system comprises means for detecting, remotely, by means of an electromagnetic signal, the presence of a user's hand near the handle, and of the type in which the detection means comprise a control circuit and at least one sensor capable of emitting or of receiving the electromagnetic signal.
Such a system is described, for example, in document FR-A-2,733,783. The system described in this document proposes the use, as a means of detecting the presence of the hand, of an infrared-radiation sensor. This sensor “observes” an area in space around the handle so that when a user's hand approaches it, the infrared radiation emitted by the hand is picked up and analyzed by the sensor which is then capable of transmitting control information to an antitheft unit.
However, the invention can also be implemented in the context of a security system in which the detection means comprise an emitter which emits an electromagnetic signal intended to be received by a receiver, the path of the signal between the emitter and the receiver running, at least in part, on the outside of an external panel of the opening leaf. In this case, the presence of the hand is detected when the hand intercepts the path of the signal because, at that instant, the signal is no longer received by the receiver.
In this case, the signal may, for example, be infrared radiation.
In such a system, it is therefore necessary for the sensor or sensors to be able to “see” the environment on the outside of the handle. However, there is good cause to ensure that the detection means control circuit should itself be arranged on the inside of the bodywork panel of the opening leaf, for obvious esthetic reasons.
BRIEF SUMMARY OF THE INVENTION
The object of the invention is therefore to propose a new design of such a system which simultaneously allows for good integration into the overall style of the vehicle, and makes the system easier to mount, allowing the cost of performing this operation to be reduced, while at the same time guaranteeing that the mounting and the system are reliable, particularly by achieving a good seal to prevent dust or moisture from being able to disrupt the operation of the system.
To this end, the invention proposes a security system for an opening leaf of a motor vehicle of the type in which the opening leaf is held in the closed position by a lock which is operated by means of a handle arranged on the outside of a bodywork panel of the opening leaf, of the type in which the security system comprises means for detecting, remotely, by means of an electromagnetic signal, the presence of a user's hand near the handle, and of the type in which the detection means comprise a control circuit and at least one sensor capable of emitting or of receiving the electromagnetic signal wherein the hand-detection means comprise an internal module which bears the sensor and which is arranged on the inside of the bodywork panel in such a way that the sensor is opposite an opening made in the bodywork panel, and the opening in the bodywork panel is blanked off by a cover which is made of a material that is transparent to the electromagnetic signal, the cover being secured against an external face of the bodywork panel.
According to other features of the invention:
the cover comprises an external transverse wall which bears against the external face of the bodywork panel, and a tubular skirt which extends transversely inward from the external transverse wall through the opening in the bodywork panel and which cooperates in a sealed fashion with a casing of the internal module;
the tubular skirt extends around a lateral external wall of the casing, and a seal is inserted between the skirt and the lateral external wall of the casing;
the seal is borne by the skirt of the cover;
the seal is borne by the casing of the internal module;
the cover is secured to the bodywork panel;
the cover is fixed to the bodywork panel by elastic push-fitting means;
the cover is fixed to the bodywork panel by adhesive bonding.
REFERENCES:
patent: 1721347 (1929-07-01), Macrae et al.
patent: 2904671 (1959-09-01), Johnston
patent: 4590410 (1986-05-01), Jönsson
patent: 4728143 (1988-03-01), Tanino et al.
patent: 4800648 (1989-01-01), Nakayama et al.
patent: 4893867 (1990-01-01), Hilborn et al.
patent: 5528355 (1996-06-01), Maase et al.
patent: 5682135 (1997-10-01), Labonde
patent: 42 12 291 (1993-10-01), None
patent: 196 17 038 (1997-11-01), None
patent: 2 572 160 (1986-04-01), None
French Search Report dated Mar. 2, 1999.
Benard Thierry
Josserand Luc
Hofsass Jeffery
Morgan & Finnegan , LLP
Tweel , Jr. John
Valeo Securite Habitacle
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