US3652865A - Electrical systems for road vehicles - Google Patents

Electrical systems for road vehicles Download PDF

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Publication number
US3652865A
US3652865A US30562A US3652865DA US3652865A US 3652865 A US3652865 A US 3652865A US 30562 A US30562 A US 30562A US 3652865D A US3652865D A US 3652865DA US 3652865 A US3652865 A US 3652865A
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US
United States
Prior art keywords
pair
feed lines
loads
feed
switch
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.)
Expired - Lifetime
Application number
US30562A
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English (en)
Inventor
William David Holt
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Application granted granted Critical
Publication of US3652865A publication Critical patent/US3652865A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/001—Functional circuits, e.g. logic, sequencing, interlocking circuits

Definitions

  • ABSTRACT An electrical system for a road vehicle has a pair of electrical [30] Foreign Application Priority Dam loads and a pair of switches controlling the loads, together July 28, 1969 Great Britain ..37,708/69 with a pair of feed lines.
  • One switch makes one feed line positive with respect to the other and the other switch makes said [52] US. Cl. ..307/ 10 R one feed line negative with respect to the other.
  • Polarity sensi- [51 1 int. Cl. ..H02g 3/00 five switching means are then provided for controlling the [58] Field Of Search ..307/10, 127, 138, 38, 9, 39, loads when the witches are operated,
  • An electrical system includes a pair of electrical loads, a pair of switches controlling the loads 5 respectively, a pair of feed lines, means whereby closingof one switch makes one feed line positive with respect to the other feed line, and closing of the other switch makes said one feed line negative with respect to the other feed line, and polarity sensitive switching means operable by a pulse 1 between the feed lines for switching the loads on and off under the control of said switches.
  • the accompanying drawing is a circuit diagram illustrating one example of the invention.
  • a positive supply line 11 energized by the battery 10 of a vehicle is connected to a plurality of contacts 12a, 12b, 12c, l2i, which are so connected that when all the contacts are in their off position they are all in series but when any of the contacts 12b is moved from its ofi position shown to its on position, the circuit is to the remaining contacts is broken.
  • a negative supply line 13 (conveniently earthed as shown) is similarly connected to a set of contacts 14a, 14b, 14c l4i, the contacts 120 and 14a forming a double pole spring return switch, and the other pairs of 2 contacts with the same suffix forming further double pole spring return switches.
  • the vehicle further includes a plurality of feed lines 15, 16, l7, 18 which are connected to the double pole switches in various combinations.
  • closing of the switch 12a, 14a 3 makes the line 15 positive with respect to the line 16, whilst closing of the switch 12b, 14b makes the line 16 positive with respect to the line 15.
  • the other switches energize the lines in various combinations, and it will be noted that each pair of feed lines is energized in response to two different double pole 3 switches, but with a difference in polarity.
  • 12 combinations are possible in general, for n feed lines the number of loads that can be controlled is the number of permutations of 2 from n.
  • relay coils 4 19a, 19b, 19c 191 Connected across various pairs of feed lines are relay coils 4 19a, 19b, 19c 191 in series with diodes 21a, 21b, 21c 21: g respectively.
  • the arrangement is such that when any one of the double pole switches is closed, one only of the relay coils is energized.
  • closing of the switch 124, 14a energizes the lines l5, 16, to which the relay coils 19a and 19b are con- 4 nected.
  • the diodes 21a, 21b only the coil 19a is energized.
  • closure of the switch 12b, 14b energizes only the coil 19b.
  • a vehicle electrical system comprising in combination n feed lines, a plurality of loads to be controlled, a plurality of switch means, one for each load, means coupling one of said switch means to one pair of said feed lines whereby operation of said one switch means makes one of said pair of feed lines positive with respect to the other of said pair of feed lines, means coupling a second of said switch means to said one pair of feed lines whereby operation of said second switch means makes said other of said pair of feed lines positive with respect to said one of said pair of feed lines, means coupling the remaining switch means to the feed lines so that each switch means energizes two feed lines in a unique manner, and polarity sensitive switching means operable by energization of the supply lines for switching the loads on and off under the control of the switch means, the maximum number of load controllable by the system-being the number of permutations of 2 from n.
  • a vehicle electrical system including a pair of electrical loads, a pair of switches controlling the loads respectively, a pair of feed lines, means whereby closing of one switch makes one feed line positive with respect to the other feed line, and closing of the other switch makes said one feed line negative with respect to the other feed line, and polarity sensitive switching means operable by a pulse between the feed lines for switching the loads on and off under the control of said switches, said switching means comprising a pair of latching relays successive actuations which energize and de-energize the respective loads, each relay having a coil connected across the feed lines, and the required polarity sensitivity being provided by a pair of diodes coupling the coils respectively to the feed lines.

Landscapes

  • Relay Circuits (AREA)
  • Electronic Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Containers, Films, And Cooling For Superconductive Devices (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
US30562A 1969-07-28 1970-04-21 Electrical systems for road vehicles Expired - Lifetime US3652865A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3770869 1969-07-28

Publications (1)

Publication Number Publication Date
US3652865A true US3652865A (en) 1972-03-28

Family

ID=10398437

Family Applications (1)

Application Number Title Priority Date Filing Date
US30562A Expired - Lifetime US3652865A (en) 1969-07-28 1970-04-21 Electrical systems for road vehicles

Country Status (5)

Country Link
US (1) US3652865A (enrdf_load_stackoverflow)
DE (1) DE2032477A1 (enrdf_load_stackoverflow)
ES (1) ES380008A1 (enrdf_load_stackoverflow)
FR (1) FR2056373A5 (enrdf_load_stackoverflow)
GB (1) GB1296706A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4118638A (en) * 1975-12-19 1978-10-03 Fabbrica Italiana Magneti Marelli S.P.A. System of distributing pilot signals

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2565399B2 (ja) * 1989-04-27 1996-12-18 株式会社大井製作所 開閉体に設けた複数の電動装置の給電制御装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3475585A (en) * 1967-07-27 1969-10-28 Chemetron Corp Welding apparatus employing single power supply for straight and reverse welding polarities

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3475585A (en) * 1967-07-27 1969-10-28 Chemetron Corp Welding apparatus employing single power supply for straight and reverse welding polarities

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4118638A (en) * 1975-12-19 1978-10-03 Fabbrica Italiana Magneti Marelli S.P.A. System of distributing pilot signals

Also Published As

Publication number Publication date
DE2032477A1 (de) 1971-03-04
FR2056373A5 (enrdf_load_stackoverflow) 1971-05-14
GB1296706A (enrdf_load_stackoverflow) 1972-11-15
ES380008A1 (es) 1972-08-01

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