EP0683500A1 - Dispositif de prévention d'incendie pour véhicules, bateaux et autres moyens de transport équipés d'appareils électromécaniques - Google Patents

Dispositif de prévention d'incendie pour véhicules, bateaux et autres moyens de transport équipés d'appareils électromécaniques Download PDF

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Publication number
EP0683500A1
EP0683500A1 EP95107192A EP95107192A EP0683500A1 EP 0683500 A1 EP0683500 A1 EP 0683500A1 EP 95107192 A EP95107192 A EP 95107192A EP 95107192 A EP95107192 A EP 95107192A EP 0683500 A1 EP0683500 A1 EP 0683500A1
Authority
EP
European Patent Office
Prior art keywords
disk
fact
push rod
conductor
elastic
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Withdrawn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
EP95107192A
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German (de)
English (en)
Inventor
Vittorio Cogoini
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.)
SECURITY CAR DI COGOINI e C SNC
Original Assignee
SECURITY CAR DI COGOINI e C SNC
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 SECURITY CAR DI COGOINI e C SNC filed Critical SECURITY CAR DI COGOINI e C SNC
Publication of EP0683500A1 publication Critical patent/EP0683500A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/14—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch
    • H01H35/141—Details
    • H01H35/143—Resetting means

Definitions

  • the invention concerns a safety device for electrical systems installed on vehicles and boats.
  • An electromagnet housed in the casing when it is supplied with electrical current, keeps the core in a lowered position against the action of a return spring, which is generally conical spiral spring, whereas when it is not supplied the action of the conical spring prevails, lifting the core and the push rod.
  • An impact particularly a horizontal impact, moves the inertial mass and the conductor disk separates from the contacts of the conductor bars, partially disconnecting the electrical system; the fuse connection between the conductor bars in fact allows low-consumption devices (parking lights etc.) to use the electrical system. Subsequently, by disconnecting the electromagnet, the core and the push rod are raised allowing the conductor disk to be repositioned centrally through the action of the radial springs.
  • This safety device therefore, unlike its predecessors, does not require manual resetting of the centered position of the inertial mass on the device itself. Moreover, it presents the following advantages: it causes the engine and relative fuel pump to stop immediately in the event of a violent impact; in the event of irreversible damage to the electrical system, it cuts off the electrical current for good; it is safe, easy to use and of minimum size.
  • An object of the present invention is to create a safety device, again operating through inertia, that maintains the advantages of the above patent and has a uniform response for every horizontal impact, irrespective of the direction from which it comes.
  • the new device comprises a casing of insulating material incorporating in its base two conductor bars, having silver-plated contacts, and joined electrically by means of a low current fuse, a disk of conductive material that can move between a position in which it makes an electrical contact between the two bars and a position at a distance from them in which it does not establish said contact, said disk being kept in a centered position in the casing by means of an elastic plate disposed between the bars and ending in a convex appendix that fits into a concave seat provided in the center of the undersurface of the disk.
  • a push rod pressed by a spring towards the bottom of the casing engages with a protuberance placed at the centre of the upper surface of the disk and keeps the disk in a state of contact against the contacts on the bars, whereas in the event of impact said disk is forced into the position out of contact by the above mentioned elastic plate disposed between the bars and acting in opposition to the push rod.
  • An electromagnet co-operates with a core or support which receives said push rod and relative spring in a hollow along its axis; when electrical current is supplied to the electromagnet it keeps the core lowered to allow efficient pressure by the push rod against the conductor disk, when current is not supplied it allows the core to rise with the relative push rod under the action of a spring; raising of the push rod allows the conductor disk to be repositioned in a centered position, exploiting the shape of the above mentioned contact surfaces between the disk and the elastic plate. It should further be noted that when the vehicle is stationary after impact, electrical current is supplied only through the fuse, increasing the safety of the persons transported, as well as that of the vehicle or boat.
  • This new device is also safe, easy to use and of minimum size, it maintains the advantages of the previous device and in addition the horizontal direction of the impact is irrelevant as far as the response of the device is concerned.
  • the device is indicated as a whole by reference number 1.
  • the space 3 has a lower part 3' with a smaller diameter and an upper part 3'' with a larger diameter, forming an annular shoulder 8.
  • a disconnecting contact plate 9 rises from the bottom of the casing, consisting of an elastic conductive blade ending in a convex appendix 10 and electrically connected to a conductor cable 11.
  • a self-centering disk 12 of conductive material that is received in the part 3' of the space in the casing and is free to oscillate horizontally; that is to say, the disk 12 has a smaller diameter than the diameter of the part 3' of the space.
  • the disk 12 has a concave seat 13 in the middle of the undersurface, in which seat the convex part of the contact plate 9 engages, keeping it centered during normal running of the vehicle or boat.
  • Said disk 12 also has a circular channel 14' on the upper surface which centrally defines a protuberance 14 the upper surface of which is level with the surface of the disk around the channel.
  • the height of the disk at the protuberance is called h.
  • the height of the space 3' from the surface of the pads 7 at the shoulder 8 is h + s so as to permit an axial movement s of the disk.
  • the concave seat has a substantially frustoconical shape, with the bottom rounded, and the base rim of the seat has a radius R that is greater than the radius r of the appendix 10. There is little friction between the contact surfaces of the seat and the appendix 10.
  • An intermediate bottom 15 is disposed on the shoulder 8.
  • a solenoid or electromagnet indicated as a whole by 16 is placed on it, its coil, indicated by 16', being wound on a body 16''.
  • Reference number 17 indicates an annular body called "magnetic continuity ring”.
  • the electrical supply cables of the solenoid are indicated by 18 and 19. It should be noted that the cable 11 in the direction of the coil, connected to the plate is passed in a suitable semicircular seat of the ring 17, so that it leaves the casing from the same opening as cables 18 and 19.
  • the body 16' of the solenoid is preferably shaped to widen at the top into a cap on which a conical spiral pressure spring 20 rests, which acts between an upper disk-shaped plate of the winding body 16" of the solenoid and a disk-shaped part 21' of a core 21 that can move inside the solenoid along its axis (coinciding with the axis of the casing).
  • the core 21 is hollow on the inside and has a cavity 22 with a larger diameter and a terminal hole 21 with a smaller diameter.
  • the hollow 22 receives the head 24' of a peg or push rod 24 that is axially movable inside the hole 23 and is pushed to a condition wherein it extends from the hole by means of a spiral pressure spring 25.
  • a threaded dowel 26 engages in a suitable thread in the hollow 22 and closes it, acting as a support for the spring 25.
  • a spacer ring 27 placed around the tray-like part of the solenoid body serves as a protection and provides an upper stop for the stroke of the core 21. Obviously this stop could be provided by separate elements.
  • Screws 28 fix together a cover 29 (possibly equipped with a heat dissipator 30), the spacer ring 27 and the casing.
  • the latter may comprise a seat 31 open to the outside, in which terminals 32 are received, generally of the spring type (figure 3), each electrically connected to a respective bar 4 or 5; a fuse (not illustrated) may be placed between the terminals.
  • the device must be assembled so that the disk 12 is substantially horizontal and must be connected to the terminal of the positive pole of the vehicle or boat battery by means of the terminal 6 and with the general electrical supply cable by means of the bar 5. Cables 18, 19 supplying the electromagnet are connected to the engine ignition block. The wire 11 is connected to the ignition power supply.
  • the disk 12 is kept centered thanks to the convex appendix 10 of the contact plate engaged in the concave seat 13 of the disk itself the protuberance 14 is in contact with the push rod 24.
  • the force of the spring 25 overcomes the force of the elastic contact plate 9 and therefore the conductor disk 12 is kept in contact with the pads 7: an electrical continuity is established between the bars 4 and 5 and the circuits connected to them.
  • the disk 12 undergoes a horizontal movement with respect to the axis of the push rod, a movement which, however, does not exceed the radius R of the horizontal projection of the concavity 13, and, no longer being opposed by said push rod, it is thrust by the plate 9 against the bottom 15 breaking the electrical continuity of the bar 4 and 5.
  • the push rod in turn, being unopposed, is pushed to protrude to the maximum extent by the spring 25 (figure 4). This actually prevents the device from being reset without the intentional intervention of the driver of the vehicle.
  • the battery current therefore passes through the fuse which allows only low intensities, such as that required, for example, by the parking lights. A larger electricity requirement breaks the circuit.
  • the current to the electromagnet 16 must be cut off for resetting to take place: this may be done, by the driver through a control on the dashboard, when suitable.
  • the conical pressure spring 20 then raises the support 21 which in turn raises the push rod 24 (figure 5). With the latter in a position protruding slightly or not at all from the bottom 15, the action of the elastic plate 9 because of the shape of the contacting concave surface 13 and convex surface 10, creates a horizontal component that returns the disk 12 to the centered position, with the projection 14 on the vertical axis a of the casing and the push rod.
  • FIG. 6 and 7 a modified embodiment of the device is shown, which is indicated on the whole with reference numeral 101. Portions of the device 101 which are identical to the corresponding ones of the device 1 have the same reference numerals and will not be described in detail.
  • the device 101 has a further spring 125 acting on the push rod 24, between the head 24' thereof and the bottom 15, in contrast with respect to the spring 25 and the spring 20.
  • the spring 125 is weaker than the spring 25.
  • the conductor bars 4 and 5 of the device 101 are buried in the material of the housing 2, so as to have an insulating coat above then.
  • the plate 109 is placed in such a way that the cable 11 thereof could have the shortest run up to the housing outlet hole.
  • the device 101 lacks of the heat dissipator 30 and the cover is built in one piece with the ring and indicated with 127.

Landscapes

  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Electromagnets (AREA)
  • Refuse-Collection Vehicles (AREA)
EP95107192A 1994-05-18 1995-05-11 Dispositif de prévention d'incendie pour véhicules, bateaux et autres moyens de transport équipés d'appareils électromécaniques Withdrawn EP0683500A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI941004 1994-05-18
ITMI941004A IT1269792B (it) 1994-05-18 1994-05-18 Dispositivo di sicurezza antincendio per veicoli, imbarcazioni e altri mezzi muniti di apparati elettromeccanici

Publications (1)

Publication Number Publication Date
EP0683500A1 true EP0683500A1 (fr) 1995-11-22

Family

ID=11368930

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95107192A Withdrawn EP0683500A1 (fr) 1994-05-18 1995-05-11 Dispositif de prévention d'incendie pour véhicules, bateaux et autres moyens de transport équipés d'appareils électromécaniques

Country Status (4)

Country Link
EP (1) EP0683500A1 (fr)
BR (1) BR9502075A (fr)
IT (1) IT1269792B (fr)
ZA (1) ZA953755B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999031695A1 (fr) * 1997-12-17 1999-06-24 Romain Bollen Detecteur de chocs

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1243839A (fr) * 1959-09-05 1960-10-21 Contacteur ou rupteur électrique à inertie
US3474202A (en) * 1967-12-07 1969-10-21 Earl E Bobier Inertia impact switch
FR2028654A5 (fr) * 1969-01-08 1970-10-09 Trouillet Eugene
US3671690A (en) * 1971-03-16 1972-06-20 Alarm Products Int Inc Vibrating switch
WO1990001789A1 (fr) * 1988-08-15 1990-02-22 Automotive Technologies International, Inc. Capteur de collision a amortissement par gaz

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1243839A (fr) * 1959-09-05 1960-10-21 Contacteur ou rupteur électrique à inertie
US3474202A (en) * 1967-12-07 1969-10-21 Earl E Bobier Inertia impact switch
FR2028654A5 (fr) * 1969-01-08 1970-10-09 Trouillet Eugene
US3671690A (en) * 1971-03-16 1972-06-20 Alarm Products Int Inc Vibrating switch
WO1990001789A1 (fr) * 1988-08-15 1990-02-22 Automotive Technologies International, Inc. Capteur de collision a amortissement par gaz

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999031695A1 (fr) * 1997-12-17 1999-06-24 Romain Bollen Detecteur de chocs
BE1011625A3 (nl) * 1997-12-17 1999-11-09 Bollen Romain Schoksensor.

Also Published As

Publication number Publication date
IT1269792B (it) 1997-04-15
ITMI941004A0 (it) 1994-05-18
ZA953755B (en) 1996-01-16
ITMI941004A1 (it) 1995-11-18
BR9502075A (pt) 1996-04-09

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